Free U.S. Shipping On Orders Over $65

Frequently Asked Questions

General Questions

What are microgreens?

Microgreens are young vegetable greens harvested 7 to 14 days after germination. Research suggests they can contain higher concentrations of certain vitamins and antioxidants than their mature counterparts. A widely cited 2012 University of Maryland and USDA study found some varieties measured several times higher in certain nutrients than the full-grown plant. Common varieties include broccoli, radish, sunflower, and peas. For the full walkthrough, read our cornerstone guide: How to Grow Microgreens: A Complete Step-by-Step Guide.

Where do you buy microgreen seeds?

We have been buying our microgreen seeds from True Leaf Market for 7 years now. They are a trustworthy supplier with fair pricing. When picking seeds, buying in bulk has a higher upfront cost, but it will save you money in the end. Click here for the seed supplier.

Read our blog: Buying Microgreen Seeds in Bulk: Cost Savings, Storage & What We Actually Buy

How long do microgreens take to grow?

Most varieties grow in 7 to 14 days from seed to harvest. Fast-growing varieties like radish can be ready in as little as 6 days, while slower varieties like basil may take up to 21 days.

Do I need special equipment to grow microgreens?

You can start with basic trays, growing medium, and seeds. Our 7x14 Microgreen Tray Kit includes everything except seeds for beginners. You will also need a light source, either a sunny windowsill or a grow light.

Can I grow microgreens without special trays or equipment?

Yes. While dedicated microgreen trays give the best results, you can grow microgreens in almost anything: egg cartons, pie tins, takeout containers, ice cube trays, or even repurposed food packaging. The key requirements are a shallow container (1 to 2 inches deep), drainage or a way to manage water, a growing medium, seeds, and a light source. We have tested all kinds of creative containers on our YouTube channel, and many of them work surprisingly well for beginners who want to try microgreens before investing in a full setup.

That said, once you are hooked (and you will be), upgrading to proper trays and a reusable silicone grow medium makes the process faster, cleaner, and more consistent.

Can I grow microgreens without soil?

Yes. You can grow microgreens hydroponically using reusable silicone grow mediums, coco coir, or directly on mesh trays. This keeps your growing area cleaner and reduces the mess of soil. For a ranked breakdown of the options, read The Best Hydroponic Grow Mediums for Microgreens.

Are microgreens the same as sprouts?

No. Sprouts are germinated seeds eaten whole (roots, seeds, and shoots) within 2 to 7 days. Microgreens are grown in soil or a growing medium for 7 to 21 days and harvested by cutting the stems, leaving the roots behind.

Read our blog: Sprouts vs. Microgreens: Which Is More Nutritious?

Read our blog: Can You Eat Microgreen Roots? Here's Why We Don't

Do microgreens regrow after cutting?

Most microgreens do not regrow after harvest. A few varieties like peas may produce a small second cutting, but quality and yield decline significantly. It is best to start a new tray for consistent results.

Read our blog: Will Microgreens Regrow After Harvesting?

Where can I learn to grow microgreens?

We offer multiple learning resources:

Read our blog: Inside the On The Grow Microgreen Masterclass: What's Actually in the Course

Can I grow microgreens year-round?

Yes. One of the biggest advantages of microgreens is that they can be grown indoors any time of year, regardless of your climate or season. As long as you have a light source (a grow light or sunny windowsill), consistent temperatures between 65 and 75°F, and basic supplies, you can grow fresh microgreens 365 days a year. This makes them one of the most accessible crops for home growers. No backyard, garden bed, or growing season required.

Can I grow microgreens outdoors?

You can, but indoor growing is far more reliable. Outdoors, microgreens are exposed to temperature swings, wind, rain, pests, and inconsistent sunlight, all of which can damage or destroy a tray in a single day. Microgreens are delicate seedlings, not hardy garden plants.

If you want to try outdoor growing, choose a shaded, protected area (like a covered porch) and grow fast varieties like radish. Keep trays off the ground to reduce pest exposure. Most successful microgreen growers, whether home or commercial, grow exclusively indoors where they can control temperature, light, and humidity for consistent results every time.

Can I grow microgreens in an apartment or small space?

Absolutely. Microgreens are one of the best crops for small-space living. A single tray can sit on a kitchen counter, windowsill, or small shelf. Our 7x14 Microgreen Tray Kit was designed specifically for compact spaces and produces enough microgreens for a small family each week. If you are even tighter on space, our 10x10 trays are a great fit for dorm rooms, RVs, or tiny kitchens. No outdoor space, garden, or special room needed. If you have a flat surface and a light source, you can grow microgreens.

Read our guide: Best Microgreens for Small Spaces

What plants should NOT be grown as microgreens?

Some plants are toxic at the seedling stage and should never be grown or consumed as microgreens. These include nightshade family plants (tomatoes, peppers, eggplant, and potatoes), which contain alkaloids like solanine that are harmful to humans at the seedling stage. You should also avoid ornamental plants, sweet peas (not to be confused with regular garden peas, which are safe), and any wild plant seeds you cannot positively identify. When in doubt, stick to seeds specifically labeled for microgreen or sprouting use from reputable suppliers like True Leaf Market.

Can I grow microgreens year-round indoors without a grow light?

You can, but results will vary. A sunny south-facing windowsill can work during months with strong natural light, but you will likely notice leggy, pale, or slow-growing microgreens during shorter winter days or in spaces without direct sunlight. For consistent results year-round, we recommend using an LED grow light positioned 6 to 12 inches above your trays for 12 to 16 hours daily. Even a basic, affordable shop-style LED light makes a noticeable difference in stem thickness, color, and overall quality.

Read our blog: Microgreen Lighting: Best Grow Lights After 7 Years of Testing

Using and Eating Microgreens

How do I eat microgreens? What can I use them for?

Microgreens are incredibly versatile. Here are the most popular ways to enjoy them:

  • Salads: Use as the base or mix with other greens for added flavor, color, and nutrition.
  • Sandwiches and wraps: Replace or add to lettuce for a fresh, flavorful crunch.
  • Smoothies: Blend a handful of microgreens (broccoli, pea shoots, sunflower, or kale work great) with fruit for a nutrient boost without much flavor change.
  • Garnish: Top soups, omelets, tacos, pizza, pasta, grain bowls, or avocado toast.
  • Pesto: Blend microgreens (especially arugula or basil) with olive oil, nuts, and parmesan.
  • Juicing: Pea shoots, broccoli, and wheatgrass microgreens juice well on their own or mixed with other produce.

The possibilities are endless. For more ideas, check out our books and course, where we share recipes.

Read our blog: The Many Ways You Can Use Microgreens

Read our blog: How to Eat Microgreens: 25+ Easy Ways to Use Them in Everyday Meals

Should I eat microgreens raw or cooked?

For maximum nutritional benefit, eat microgreens raw. Cooking, especially high heat, can reduce some of the beneficial nutrients and enzymes. This is particularly relevant for sulforaphane in broccoli microgreens, which research suggests is activated when the greens are chewed or chopped raw.

That said, microgreens can absolutely be added to cooked dishes. The key is to add them at the very end: toss them onto a stir-fry just before serving, fold them into an omelet off the heat, or stir them into warm soup in the bowl. This preserves more nutrition while still getting the flavor and visual appeal in hot dishes.

Can I put microgreens in smoothies?

Yes. Smoothies are one of the easiest ways to get a daily serving of microgreens, especially if you are not a salad person. Broccoli, pea shoots, sunflower, and kale microgreens all blend well, and their flavors are easily masked by fruit.

A simple starting recipe: blend a handful of microgreens with a banana, a cup of frozen fruit (berries, mango, or pineapple), and your choice of liquid (water, milk, or coconut water). You can also add chia seeds, protein powder, or yogurt.

Tip: If you harvest more than you can eat fresh, freeze your extra microgreens specifically for smoothie use. The texture will not hold up for fresh eating after freezing, but they blend perfectly and retain their nutritional value.

Can I dehydrate or preserve microgreens?

Yes. Dehydrating microgreens is a great way to preserve a large harvest and extend shelf life significantly. Use a food dehydrator set to 115 to 125°F and spread microgreens in a single layer on the trays. Dehydrating typically takes 4 to 8 hours depending on the variety and humidity. Once fully dried, store in an airtight container in a cool, dark place. They will keep for several months.

Dehydrated microgreens work great as a seasoning sprinkled over dishes, blended into homemade spice mixes, or crushed into powder for smoothies and soups. The texture changes completely (they become crispy and crumbly), so they will not work as a fresh salad substitute, but the nutritional value is largely preserved.

You can also freeze microgreens for smoothie use (see our freezing tips in the "Can I freeze microgreens?" answer below), or incorporate them into recipes like homemade jerky for a nutrient boost.

How many microgreens should I eat per day?

There is no official daily recommendation for microgreens. However, adding a small handful (about 1 to 2 ounces) to meals is a simple way to boost your daily nutrient intake. Think of it as adding an extra serving of vegetables to your diet. Since microgreens are nutrient-dense, a little goes a long way. As with any dietary change, listen to your body and consult a healthcare professional if you have specific dietary concerns.

Health & Nutrition

What are the healthiest microgreens to grow?

While all microgreens are nutrient-dense, some varieties stand out based on available research:

  • Broccoli: A source of sulforaphane and high in vitamins A, C, E, and K. Broccoli microgreens are the most researched variety for health benefits. Learn to grow them in our How to Grow Broccoli Microgreens guide.
  • Radish: High in vitamins C and E, with antioxidant activity. Also one of the fastest and easiest to grow. See our How to Grow Radish Microgreens guide.
  • Sunflower: A source of protein, healthy fats, and B vitamins. One of the heartiest and most filling microgreens.
  • Pea shoots: High in protein, fiber, and vitamins A and C. Great for smoothies and salads.
  • Kale: Rich in vitamins K, C, and A. Easy to grow and mild in flavor.
  • Red cabbage: Very high in vitamin C and contains anthocyanins, the antioxidants that give it the red and purple color.

Disclaimer: We are educators, not nutritionists or medical professionals. Nutritional content varies based on seed genetics, growing conditions, light quality, water quality, and other factors. We do not make specific nutritional or health claims about crops grown on our products. For nutritional data specific to your growing conditions, we recommend laboratory testing through an accredited food testing facility. Consult a healthcare professional for dietary advice.

Read our blog: The Mental Health Benefits of Microgreen Nutrition and Growing Microgreens

What is sulforaphane, and why are broccoli microgreens so popular?

Sulforaphane is a naturally occurring compound found in cruciferous vegetables (broccoli, kale, cabbage, cauliflower, and others) that has been studied by researchers for its antioxidant and health-promoting properties. Research shows it is formed when you chew or chop these vegetables, which activates an enzyme called myrosinase that converts a precursor compound (glucoraphanin) into sulforaphane.

Broccoli microgreens have gained significant attention because research suggests they contain substantially higher concentrations of glucoraphanin compared to mature broccoli. This is a key reason broccoli microgreens are currently the most popular and widely grown variety in the microgreens market.

To maximize sulforaphane formation, researchers suggest consuming broccoli microgreens raw and chopping them before eating to activate the enzyme reaction.

Disclaimer: We share this for educational purposes only. We are not nutritionists, medical professionals, or researchers, and we do not make health claims about our products. Nutrient content varies based on growing conditions. Consult a healthcare professional for health or dietary advice.

Read our blog: Broccoli Sprouts vs. Broccoli Microgreens: What's the Difference?

Are microgreens good for specific health conditions (weight loss, diabetes, etc.)?

There is growing scientific interest in the potential health applications of microgreens, and new research continues to emerge. However, we want to be transparent: we are educators and microgreen growers, not doctors, nutritionists, or medical researchers. We do not make health claims about our products or microgreens in general.

What the research broadly suggests is that microgreens are nutrient-dense, low in calories, and rich in vitamins, minerals, and antioxidants, qualities that can complement a healthy diet. Beyond that, any specific health questions should be directed to a qualified healthcare professional who understands your individual situation.

We focus on teaching you how to grow them well. What you do with that nutrition is between you and your doctor.

How do microgreens compare to sprouts nutritionally?

While we cannot make specific nutritional claims, the general research landscape suggests both microgreens and sprouts are nutrient-dense, but in different ways. Sprouts are typically richer in certain enzymes due to their very early harvest stage (2 to 7 days). Microgreens, grown for 7 to 21 days with exposure to light, develop chlorophyll and a broader range of vitamins, particularly vitamins C, E, K, and beta-carotene, that require light to form. Some studies have suggested certain microgreen varieties contain higher overall concentrations of some vitamins compared to both sprouts and mature vegetables.

The biggest practical differences are food safety and flavor. Microgreens are generally considered lower risk for foodborne illness because they are grown in ventilated conditions with air circulation, unlike sprouts, which grow in warm, moist, enclosed environments. Microgreens also tend to have more developed flavors and textures.

Disclaimer: We are educators, not nutritionists. For specific nutritional comparisons, we recommend consulting published research or a qualified nutritionist.

Read our blog: Sprouts vs. Microgreens: Which Is More Nutritious?

Microgreens for Pets

Are microgreens safe for dogs?

Most microgreens that are safe for humans are also safe for dogs in small amounts. Popular dog-friendly varieties include wheatgrass, sunflower, broccoli, and kale microgreens. Dogs can benefit from the added vitamins, minerals, and fiber that microgreens provide as a supplement to their regular diet.

Important guidelines:

  • Start small: Introduce microgreens gradually and watch for any digestive reactions.
  • Keep it supplemental: Microgreens should make up no more than about 10% of your dog's daily diet.
  • Chop or blend: Mix chopped microgreens into their regular food for easier digestion.

Varieties to AVOID for dogs:

  • Onion and garlic (toxic to dogs, can cause anemia)
  • Oregano
  • Parsley (in large amounts)
  • Any nightshade family plants (tomato, pepper, eggplant)
  • Buckwheat (contains fagopyrin, which can cause light sensitivity)

We are not veterinarians. Always consult your vet before adding microgreens or any new food to your pet's diet, especially if your pet has allergies, sensitivities, or existing health conditions.

Are microgreens safe for cats?

Yes, certain microgreens are safe for cats in moderation. Cats are obligate carnivores, so microgreens should only be a very small supplement, no more than about 5% of their diet. Many cats naturally enjoy nibbling on greens, and offering safe microgreens is much better than letting them chew on potentially toxic houseplants.

Cat-safe microgreens include:

  • Wheatgrass (a longtime favorite, great for digestion and hairball reduction)
  • Sunflower
  • Broccoli
  • Alfalfa

Varieties to AVOID for cats:

  • Onion, garlic, leek, and chives (toxic, can cause anemia)
  • Any allium family plants
  • Any nightshade family plants

Growing a small tray of wheatgrass specifically for your cat is a fun, enriching option. It gives them something safe to graze on and can help with digestion. Just supervise until you know how they respond.

We are not veterinarians. Always consult your vet before introducing new foods to your cat's diet.

Microgreens for Educators & Classrooms

Can I use microgreens as a classroom or school project?

Microgreens make an excellent educational tool for classrooms of all ages. They are one of the best crops for hands-on STEM learning because they grow fast enough (7 to 14 days) to fit within a school project timeline, they require minimal space and equipment, and they teach real science concepts: germination, photosynthesis, plant biology, nutrition, and even basic business skills.

Our 7x14 Microgreen Tray Kit and our 10x10 trays are great options for classroom settings. Pair them with our free downloadable PDF guides for lesson support.

We have had educators from middle school through college-level programs reach out about using our products and resources, and many have shown our YouTube videos to their classrooms. While we do not currently offer formal certifications or institutional licensing, we are actively exploring options for educational programs. If you are an educator interested in using our resources for your classroom, email us at info@onthegrow.net. We would love to hear about your program.

Course & Learning Resources

What's the difference between your free content, Masterclass, and book?

  • Free YouTube videos: 350+ tutorials covering specific techniques and troubleshooting.
  • Microgreen Masterclass (paid online course): comprehensive step-by-step training across 11 modules and 60+ lessons, with business basics and ongoing updates.
  • Becoming a Microgreen Master book: a written guide covering fundamentals, perfect for offline reference.
  • Free PDF guides: quick-reference downloads for specific topics like fertilizer ratios and troubleshooting.
  • Free blog: hundreds of in-depth articles on every topic we cover.

All are valuable. Choose based on your learning style and needs. For a full look inside the course, read Inside the On The Grow Microgreen Masterclass.

Do I get lifetime access to the Masterclass?

Yes. The Microgreen Masterclass includes lifetime access with all future updates. Learn at your own pace and revisit lessons anytime.

Product Questions

What's the difference between silicone and stainless steel grow mediums?

Our reusable silicone grow medium is our primary and recommended reusable option. It is flexible, clean to work with, and reusable across 20 to 30+ grow cycles with proper care. We recommend hand washing with free-and-clear soap and warm water to preserve the surface over time.

We also offered a 316 grade stainless steel reusable grow medium (we introduced 316 to the market), but the stainless line is being phased out, so silicone is the option we point growers toward going forward. Both are made from food-grade materials and reusable for months with proper care. Compare the current options here.

Read our blog: Silicone Reusable Microgreen Grow Medium: Complete Overview

What is the difference between your 1.2mm and 1.7mm silicone grow mediums?

The 1.2mm is our standard silicone grow medium and works well for the majority of microgreen seed varieties. It is made from virgin food-grade platinum-cured silicone, third-party tested for FDA compliance, LFGB Tested & Compliant, and rated for 20 to 30+ grows with proper care. The holes are small enough to support most small to medium seeds including broccoli, radish, kale, cabbage, and most brassicas.

The 1.7mm large-hole silicone is designed specifically for larger seed varieties like sunflower, peas, wheatgrass, and radish, where the slightly larger hole size allows for better root development. It is food-grade silicone but comes from a different manufacturer, so it is not platinum-cured and does not carry a stated grow count estimate.

The easiest way to tell them apart by feel: the 1.2mm surface feels smooth, and the 1.7mm surface feels coarse or bumpy. If you are unsure which size you have, that texture difference is the most reliable way to distinguish them.

How do I clean reusable grow mediums?

  1. Scrape off roots with our Microgreen Medium Scraper.
  2. Wash with warm water and free-and-clear soap.
  3. Sanitize with boiling water (1 to 2 minutes) after every grow.
  4. Air dry completely before storage.

Total cleanup time is about 5 minutes per medium. Many growers wash and sanitize in batches for quicker timing.

Read our blog: How to Clean and Sanitize Microgreen Trays and Reusable Grow Mediums

How long do reusable grow mediums last?

With proper care, the standard 1.2mm platinum-cured silicone grow medium is rated for 18 to 24 months, or 20 to 30+ grows, under normal home growing conditions. Commercial use with higher cycle frequency may require more frequent replacement. The 1.7mm large-hole silicone does not carry a stated grow count estimate but is designed to last for years with proper care. Replace either medium if you notice tears, surface deterioration, flaking, exposed fiberglass, or any signs of wear.

See our Safety Disclaimer for Reusable Grow Mediums to learn more.

What does it mean if I see white residue, flaking, or peeling on my silicone grow medium?

Stop using it immediately. White residue, flaking, or material that appears to be separating from the surface are signs that the silicone has reached or exceeded its usable life. Do not continue growing food on a medium showing these symptoms. It is your responsibility to inspect the medium and the product being grown on it.

If you see any of the following, the medium needs to be replaced: visible flaking or material coming away from the surface, a texture that feels uneven or degraded compared to when it was new, white residue that is not seed hulls or mineral deposits and does not rinse away, or any sign that the silicone layer is separating from the fiberglass core. When in doubt, replace it. See our Safety Disclaimer for Reusable Grow Mediums to learn more.

Is silicone a microplastic? Can it shed particles into my food?

Silicone is not a plastic and does not break down into conventional petroleum-based microplastics. It is a synthetic material built on a silicon-oxygen backbone, which makes it chemically distinct from traditional plastics.

That said, we want to give you an honest answer rather than a polished one. Some research shows that silicone can shed its own micro-particles under mechanical stress or prolonged high heat. For a grow medium sitting in ambient conditions with room-temperature water and seeds, that risk is extremely low. The conditions most associated with silicone particle release in the research, high heat and fatty food contact, are absent in microgreen growing.

Our 1.2mm silicone is virgin food-grade platinum-cured silicone, third-party tested for FDA compliance. We recommend hand washing only, with no brushes or abrasive scrubbers, to preserve the surface integrity of the medium over time. See our Safety Disclaimer for Reusable Grow Mediums to learn more.

Are microgreens grown on your reusable mediums more nutritious than soil-grown microgreens?

We do not make any claims about the nutritional content or nutrient density of crops grown on our products. Our reusable grow mediums are inert materials. They do not add or remove nutrients.

Nutrient density is influenced by many factors unrelated to the growing medium, including seed genetics, light quality, water quality, fertilizers used, and growing conditions. While general research shows microgreens are nutrient-dense compared to mature vegetables, and hydroponic methods can produce nutrient-rich crops, we have not conducted laboratory testing specific to our products.

We are not nutritionists and cannot make nutritional claims. If you need nutritional data for your crops, we recommend conducting laboratory testing through an accredited food testing facility.

For more information, see our complete Nutritional Content Disclaimer.

What seeds can I grow on reusable grow mediums?

We have tested 70+ microgreen seed varieties on our reusable grow mediums. Medium-to-large seeds with manageable root systems perform best, including most brassicas (broccoli, kale, cabbage, mustard, kohlrabi), radishes, basil, and common salad mixes.

Some seeds, especially peas, have very aggressive roots that tangle deeply into the medium, making cleanup difficult. These grow better directly on a mesh tray. Very tiny seeds may fall through the mesh and do better on soil or coco coir.

For the complete seed compatibility breakdown with all 70+ varieties listed, read our blog: Compatible Microgreen Seeds for Reusable Grow Mediums. You can also find compatibility charts in the product photos on each reusable grow medium listing.

Which tray size should I start with?

The 7x14 OTG Microgreen Tray Kit is our most popular starter size. It is compact enough for countertops but produces enough microgreens for a small family. If you have more space, 10x20 trays are the commercial standard.

Do Bootstrap Farmer trays fit your products?

Yes. Our reusable grow mediums and tray clip labelers are designed to fit Bootstrap Farmer Heavy Duty 10x20 and 10x10 trays.

What seeds work best with reusable grow mediums?

Works great with: sunflower, radish, broccoli, arugula, kale, cabbage, kohlrabi, and most Brassica family seeds.

Does NOT work well with: Swiss chard, beets, cilantro. These varieties perform better on soil or coco coir.

See the full compatibility chart in the photos on each listing.

Are your products made in the USA?

Our Bootstrap Farmer trays are made in the USA. Our Microgreen Tray Clip Labelers are designed, manufactured, and assembled in-house by us in Texas. Some products are sourced internationally to provide the best quality at reasonable prices, though we are working toward all USA-based production as pricing becomes more sustainable for small businesses.

Can I use your products with non-Bootstrap Farmer trays?

Our reusable grow mediums fit any standard 10x20 or 10x10 tray. Our Tray Clip Labelers are specifically designed for Bootstrap Farmer Heavy Duty trays and may not fit other brands due to rim thickness variations.

Are your products organic/food-safe certified?

Our reusable silicone grow mediums are made from food-grade materials and our 1.2mm silicone is third-party tested for FDA compliance and LFGB Tested & Compliant. While the products themselves are not "organic certified" (that applies to agricultural inputs), they are safe for organic growing practices. Our recommended fertilizer, Ocean Solution 2-0-3, is OMRI-listed organic.

Growing Questions

What pH should I use for hydroponic microgreens?

We recommend a pH of 5.5 to 6.0 for most microgreen varieties. Use a pH meter and pH up/down solutions to adjust your nutrient water. Download our Free Fertilizer Ratio Guide for detailed mixing instructions.

How much light do microgreens need?

Most microgreens need 12 to 16 hours of light per day. You can use:

  • A sunny windowsill (south-facing works best)
  • LED grow lights positioned 6 to 12 inches above trays
  • Fluorescent shop lights (budget-friendly option)

Insufficient light causes leggy, pale microgreens. Adequate light produces thick stems and vibrant colors.

Read our blog: Microgreen Lighting: Best Grow Lights After 7 Years of Testing

Why are my microgreens molding?

Common causes:

  • Overwatering: medium should be moist, not saturated
  • Poor airflow: add a small fan for gentle circulation
  • High humidity: keep humidity around 40 to 60%
  • Dirty equipment: sanitize trays and mediums between grows

Download our Free Troubleshooting Guide for solutions.

Read our blog: Microgreens and Mold: The Complete Guide to Prevention, Identification, and Treatment

Can I use tap water?

It depends on your water quality. Most tap water works fine, but heavily chlorinated or very hard water can affect growth. If you notice problems, try filtered water or let tap water sit uncovered for 24 hours to off-gas chlorine.

Do I need fertilizer for microgreens?

Soil-grown: usually no fertilizer needed if using a quality potting mix. We personally do not suggest most liquid fertilizers with soil since most quality soil mixes are already nutrient rich, but worm castings or your own experiments are fine since every soil is different.

Hydroponic (coco coir or reusable mediums): yes, add hydroponic nutrients after germination. We use Ocean Solution 2-0-3 at 0.5 oz per gallon for microgreens.

Read our blog: Best Fertilizers and Nutrients for Microgreens

What is damping off, and how do I prevent it?

Damping off is a fungal disease that kills microgreen seedlings at or just below the soil line. You will notice affected stems become thin, mushy, and collapse, often in patches across the tray. Once it starts, the affected seedlings cannot be saved.

Common causes include overwatering, poor airflow, high humidity, overly dense seeding, and unsanitized trays or growing mediums. Prevention is key: maintain good air circulation with a small fan, avoid overwatering (moist, not soggy), sanitize your trays and mediums between every grow, and do not overcrowd seeds.

If you notice damping off on part of a tray, you can still harvest the healthy portions. Just cut well away from the affected area and inspect carefully before eating.

Read our blog: What Is Damping Off in Microgreens? How to Identify, Treat, and Prevent It

How do I prevent leggy microgreens?

  • Provide adequate light (12 to 16 hours daily)
  • Do not skip the blackout/weight phase during germination
  • Maintain proper temperature (65 to 75°F)
  • Ensure good airflow

Read our blog: Top Microgreen Growing Mistakes and How to Avoid Them

Do hydroponic nutrients actually make a difference for microgreens?

It depends on the crop and your growing method. We have tested over 10 different hydroponic nutrients head-to-head against plain water across multiple microgreen varieties on our YouTube channel, and the results vary. Some crops, particularly larger, longer-growing varieties, show noticeable improvements in stem thickness, color, and harvest weight when given nutrients during the bottom-watering phase. Other fast-growing crops like radish often perform nearly the same with or without added nutrients.

For soil-grown microgreens, a quality potting mix usually provides enough nutrition for the short 7 to 14 day growth cycle, so additional fertilizer typically is not needed. For hydroponic growing (coco coir or reusable mediums), adding a hydroponic nutrient like Ocean Solution 2-0-3 during bottom-watering generally produces better results than water alone.

These findings reflect our own first-hand testing in our specific controlled grow space (we hold roughly 75 to 80°F, humidity at or below 35%, with specific lighting and airflow). Results and opinions can vary, so we always encourage you to run your own experiments. Download our Free Fertilizer Ratio Guide for mixing instructions.

What's the blackout method?

During germination (the first 3 to 5 days), cover seeds with an upside-down tray or humidity dome to block light. This encourages strong stem development. Once seeds germinate around 75%, move trays to light.

Read our blog: Microgreens Weight vs Blackout: When to Switch and Why

Should I stack weight on my trays during germination?

Many growers place weight on top of their trays during the germination phase, typically by stacking another tray with a weight (like a brick, book, or second tray filled with water) on top of the seeds. The purpose is to create gentle downward pressure that encourages seeds to root into the growing medium rather than lift up, which can lead to uneven growth and poor root anchoring. Weight also helps remove seed hulls.

We have tested stacked weight on multiple crops including broccoli, sunflower, and radish microgreens, and the results vary by seed size. Larger seeds like sunflower tend to benefit most from added weight during germination. Smaller seeds like broccoli may not need as much. The weight phase typically lasts 2 to 4 days during blackout, then you remove the weight and transition the tray to light.

There is no single "right" amount of weight. Experiment with your setup to see what works best for each variety you grow.

Read our blog: Why Do Microgreens Need Weight? Our 4-Tray Experiment

Why are my microgreens yellowing?

Most common causes:

  • Insufficient light: increase light duration (12 to 16 hours) or move lights closer (6 to 12 inches)
  • Nutrient deficiency: if growing hydroponically, make sure you are adding fertilizer after germination
  • Root problems: check for root rot from overwatering

Yellowing at harvest time is normal as lower leaves age.

Read our blog: Top Microgreen Growing Mistakes and How to Avoid Them

Why aren't my seeds germinating?

Check these factors:

  • Old seeds: germination rates decline over time, so use fresh seeds
  • Wrong temperature: most seeds germinate best at 65 to 75°F
  • Too dry or too wet: medium should be moist but not waterlogged during germination
  • Light exposure: most seeds germinate better in darkness, so use the blackout method for the first 3 to 5 days
  • Seed quality: always use food-grade microgreen seeds, never bird seed

Read our blog: Microgreen Seed Quality: Why It Matters and How to Choose the Right Seeds

My microgreens taste bitter. What went wrong?

Common causes:

  • Harvested too late: harvest at first true leaf stage for best flavor
  • Heat stress: temperatures above 80°F can cause bitterness
  • Water stress: inconsistent watering affects flavor
  • Variety selection: some varieties (like mustard, arugula) are naturally spicier

Broccoli, sunflower, and peas are milder if you prefer less intense flavors.

What's the difference between soil, coco coir, and reusable grow mediums?

Each growing medium has pros and cons:

Soil is the most forgiving for beginners. It naturally holds moisture and contains some nutrients, so fertilizer is not always necessary. The downside is cleanup. Soil is messy and cannot be reused, so compost it after each grow.

Coco coir is a soil-free alternative made from coconut husks. It is cleaner than soil, holds moisture well, and works great for most varieties. It can be reused once or twice if sterilized, but quality degrades. You will need hydroponic fertilizer since coco coir contains no nutrients.

Reusable grow mediums (silicone) last for months with proper care, eliminate ongoing medium costs, and make cleanup fast. They do require hydroponic fertilizer and work best with medium-to-large seed varieties. See our seed compatibility information on each product listing.

For a detailed growing guide covering all three methods, read How to Grow Microgreens in 10x20 Trays, and for a head-to-head test, see our Coco Coir vs. Reusable Grow Medium case study.

When should I switch from top-watering to bottom-watering?

During the germination phase (the first 3 to 5 days while seeds are in blackout), top-watering with a mist or spray bottle is the best approach. Seeds need surface moisture to germinate, and misting keeps them evenly damp without disturbing them. Top-watering is also helpful for rinsing away seed hulls on crops like sunflower and pea.

Once your seeds have germinated and you move the tray to light, switch to bottom-watering by adding water directly to the reservoir tray beneath the grow tray. This allows roots to drink from below, keeps the foliage dry (reducing mold risk), and produces a cleaner crop at harvest. For most varieties, the switch happens around day 3 to 5.

The exception: if you notice dry spots on the surface after switching to bottom-water, a quick targeted mist on those areas is fine. The goal is to keep the medium consistently moist, not waterlogged, throughout the entire grow cycle.

Read our blog: How to Water Microgreens: The Complete Watering Guide

How do I prepare coco coir bricks for microgreens?

Coco coir typically comes in compressed bricks that need to be rehydrated before use. Place the brick in a large container or bucket and add warm water. Most bricks will expand to roughly 5 to 7 times their compressed size. Break up the brick as it absorbs water, working it with your hands until it reaches a consistent, fluffy texture with no dry clumps remaining. The ideal moisture level is like a wrung-out sponge: damp throughout but not dripping wet.

If the coco coir feels too wet after rehydrating, squeeze out excess water before adding it to your trays. Overly wet coco coir is one of the most common causes of mold and damping off for new growers. Spread it evenly in your tray to a depth of about 1 inch, lightly tamp it flat, and you are ready to seed.

One full-size brick typically fills 4 to 6 standard 10x20 trays depending on how deep you pack it. We no longer sell coco coir, but you can find the coco coir we use on Amazon.

What about burlap, biostrate, and terrafibre grow mats?

Beyond soil, coco coir, and our reusable mediums, there are several disposable hydroponic grow mats available for microgreens:

Burlap is one of the cheapest hydroponic options, roughly $0.30 per 10x20 tray. It works well for most crops but tends to dry out faster than other mediums, so you will need to stay on top of misting during germination.

Biostrate is a felt-like synthetic mat that holds moisture well and provides a clean, consistent growing surface, around $1.00 per 10x20 tray. Note that biostrate is no longer a favorite of ours as of 2026, in part because it did not break down in our home compost.

Terrafibre is a hemp-based grow mat, also around $1.00 per 10x20 tray. It retains water very well and roots tend to anchor into it more aggressively than other mats, which can make cleanup slightly more involved but produces well-anchored crops.

We have tested all of these on our YouTube channel. Each has pros and cons. For long-term cost savings and sustainability, our reusable silicone grow mediums eliminate ongoing medium costs entirely. For a full ranking, read The Best Hydroponic Grow Mediums for Microgreens.

What is the Kratky method for growing microgreens?

The Kratky method is a passive hydroponic technique where plants grow suspended above a nutrient-filled water reservoir, with no pumps, no electricity, and no complicated equipment. It is named after Dr. Bernard Kratky from the University of Hawaii.

For microgreens, the Kratky method works well because of their short 7 to 14 day growth cycle. Roots only hang above the nutrient water for about 4 to 8 days, which greatly reduces the risk of root rot that can affect longer-growing crops.

We sell a complete 10x20 Kratky Hydroponics Tray Kit that includes everything you need to get started. For a full step-by-step walkthrough, read How to Grow Microgreens Using the Kratky Method.

Do I need to soak microgreen seeds before planting?

It depends on the seed variety.

Seeds that benefit from soaking (8 to 12 hours): larger seeds like peas, sunflower, and mung beans germinate faster and more evenly when pre-soaked. Soaking softens the hard outer shell and jumpstarts the germination process.

Seeds that do NOT need soaking: most small-to-medium seeds like broccoli, radish, kale, arugula, cabbage, and mustard do not need soaking. Simply spread them on your growing medium, mist, and proceed with the blackout method.

Seeds you should NEVER soak: mucilaginous seeds (like basil, chia, and flax) form a gel coating when wet. These should be spread dry on your medium and misted. Do not soak them or they will clump together into an unmanageable mass.

Can I freeze microgreens?

Yes, but only for use in smoothies or cooked dishes. Freezing destroys the crisp texture of microgreens, so they will not work for salads or garnishes after being frozen. However, freezing does preserve most of the nutritional value. Spread harvested microgreens on a baking sheet in a single layer, freeze for 1 to 2 hours, then transfer to a freezer bag. They will keep for 2 to 3 months and blend perfectly into smoothies.

Growing Questions: Crop Specific

Which pea varieties make the best microgreens?

Peas are one of the most popular microgreens to grow. They are forgiving, fast, and produce a large, satisfying harvest. The most common varieties grown as microgreens include Speckled Pea (our personal favorite for flavor and texture), Dwarf Grey Sugar Snap Peas, Dun Pea, and Green Pea. Each variety produces slightly different flavor profiles ranging from sweet and mild to earthy and robust.

Pea microgreens are one of the few varieties that may produce a small second cutting after the first harvest, though the quality and yield drop noticeably. For the best results, start a fresh tray. Peas have large seeds that benefit from soaking for 8 to 12 hours before planting, and they drink a lot of water throughout the growth cycle, so keep your reservoir full.

One important note: peas have aggressive root systems that tangle deeply into most growing mediums. They grow best directly on a mesh tray or in soil rather than on reusable silicone, where root cleanup becomes very difficult.

Read our blog: How to Grow Pea Microgreens on Various Trays

Can I grow unusual seeds as microgreens, like corn, cantaloupe, or pumpkin?

We have experimented with dozens of unconventional crops as microgreens on our YouTube channel, including corn, cantaloupe, pumpkin, and store-bought chia seeds. Some work better than others.

Corn produces sweet, grass-like microgreens that grow well on coco coir and make a fun experiment. Store-bought chia seeds can be grown as microgreens, though they are mucilaginous (they form a gel coating when wet) and require special handling. Spread them dry on your medium and mist rather than soaking. Cantaloupe and pumpkin are novelty experiments. They will germinate and grow, but the harvest yield is low compared to traditional microgreen crops and the flavor is not as developed.

The rule of thumb: if the mature plant is edible and the seed is untreated, it is generally safe to experiment with as a microgreen. Just avoid nightshade family plants (tomatoes, peppers, eggplant, potatoes), ornamental plants, and any seeds you cannot positively identify. Stick to seeds from reputable suppliers labeled for food use.

Storage & Harvesting

How do I store harvested microgreens?

Store unwashed microgreens in an airtight container at 35 to 40°F (refrigerator temperature). Place a paper towel in the container to absorb excess moisture. Never wash microgreens before storage. Only rinse right before eating. Properly stored microgreens stay fresh for 7 to 14 days depending on the variety.

How long do microgreens last after harvest?

Most varieties last 7 to 14 days when stored properly (unwashed, 35 to 40°F, in an airtight container with a paper towel). Delicate varieties like basil may only last 5 to 7 days, while heartier varieties like sunflower and peas can last up to 2 weeks.

Should I wash microgreens before or after harvest?

Never wash before harvest or storage. Only rinse microgreens right before you are ready to eat them. Washing before storage introduces moisture that significantly shortens shelf life and increases spoilage risk.

What's the best way to harvest microgreens?

Use clean, sharp scissors or a knife. Cut stems just above the growing medium, leaving the roots behind. Harvest in the morning after watering for maximum crispness. For the cleanest harvest, bottom-water only (never top-water) during the growth phase to keep foliage clean.

Read our blog: What Works Best for Harvesting Microgreens: Knife vs Scissors vs Electric Trimmers

Yield & Planning

How much will one tray produce?

Typical yields per harvest:

  • 7x14 tray: 4 to 8 oz (enough for a small family for one week)
  • 10x20 tray: 8 to 16 oz depending on variety

Sunflower and peas produce the most weight. Smaller seeds like broccoli and radish produce less volume but are nutrient-dense.

How many seeds do I need per tray size?

Seeding density varies by variety:

  • Small seeds (broccoli, radish, arugula): 1 to 2 tablespoons per 10x20 tray
  • Medium seeds (sunflower): 1 to 1.5 cups per 10x20 tray
  • Large seeds (peas): 2 to 3 cups per 10x20 tray

For 7x14 trays, use about 1/3 of these amounts. Seeds should cover the surface in a single layer with minimal overlap. See our free guides or Masterclass for specific variety charts.

How many trays should I start with as a beginner?

Start with 2 to 4 trays and stagger planting every 3 to 4 days. This gives you a continuous harvest and helps you learn the process without waste. Once comfortable, scale up based on your consumption or sales needs.

Read our blog: How to Start Growing Microgreens: A Beginner's Guide

What are the fastest microgreens to grow?

If you want the quickest harvest, these varieties are typically ready in under 10 days:

  • Radish: 6 to 8 days. One of the fastest and easiest to grow. Bold, peppery flavor.
  • Arugula: 7 to 10 days. Spicy, peppery kick.
  • Broccoli: 8 to 10 days. Mild flavor, high in nutrients.
  • Kale: 8 to 10 days. Mild, versatile, and easy for beginners.
  • Mustard: 7 to 10 days. Ranges from mild to spicy depending on variety.

Slower varieties like peas (10 to 14 days), sunflower (10 to 14 days), and basil (16 to 21 days) take longer but are worth the wait for their unique flavors and textures. Our fastest beginner crop has its own guide: How to Grow Radish Microgreens.

What are the easiest microgreens for beginners?

If you are just starting out, we recommend beginning with these varieties:

  • Radish: extremely fast, very forgiving, and germination rates are typically high. A great confidence builder.
  • Broccoli: easy to grow, inexpensive seeds, and works well on virtually any growing medium.
  • Sunflower: hearty, satisfying to grow, and produces visually impressive results. A great first "wow" moment.
  • Pea shoots: hard to mess up, and the large seeds make planting straightforward.

Start with one or two varieties to learn the process before experimenting with more challenging seeds. Our broccoli and radish guides are great starting points, along with our free downloadable PDF guides and YouTube tutorials.

Read our blog: How to Start Growing Microgreens: A Beginner's Guide

Safety & Quality

Can I use bird seed for microgreens?

No. Bird seed is not held to food safety standards and may contain contaminants, pesticides, or pathogens unsafe for human consumption. Always purchase seeds specifically labeled for microgreens or sprouts from reputable suppliers like True Leaf Market.

Read our blog: Microgreen Seed Quality: Why It Matters and How to Choose the Right Seeds

Are your growing methods food-safe for selling?

Yes, when followed properly. Our hydroponic methods using reusable grow mediums and bottom-watering reduce contamination risks compared to soil growing. Always:

  • Sanitize equipment between grows
  • Use food-grade seeds from reputable suppliers
  • Maintain proper water quality
  • Follow local health department guidelines for commercial production

How do I know if my microgreens are safe to eat?

Safe microgreens should:

  • Smell fresh (no sour or musty odors)
  • Look vibrant with no visible mold or slime
  • Come from food-grade seeds and clean growing systems
  • Be free from pests

If you see mold, smell anything off, or have any doubts, do not eat them. Prevention through proper growing practices is key.

Can I grow microgreens from seeds I already have (garden seeds, herb seeds, etc.)?

Possibly, but with important cautions. The seeds must be untreated (no fungicide coatings or chemical treatments) and from a plant species that is safe to eat at the seedling stage. Many standard garden seeds are treated with chemicals not intended for human consumption at the sprout or microgreen stage.

Your safest option is always to use seeds specifically labeled for microgreen or sprouting use from a reputable supplier. These seeds are held to food safety standards appropriate for growing crops that will be consumed young. We recommend True Leaf Market for microgreen-specific seeds.

Never use seeds from nightshade plants (tomatoes, peppers, eggplant, potatoes), ornamental plants, or any seeds of unknown origin.

Technical Questions

What fertilizer do you recommend?

For hydroponics, we use Ocean Solution 2-0-3 at 0.5 oz per gallon. It is OMRI-listed organic, mixes cleanly, and does not clog systems.

For soil, we like Fox Farm Ocean Forest or Happy Frog blends, which provide nutrients without additional fertilizer.

Download our Free Fertilizer Ratio Guide, or read Best Fertilizers and Nutrients for Microgreens.

How do I mix hydroponic nutrients for microgreens?

Mixing hydroponic nutrients for microgreens is straightforward. For our recommended fertilizer, Ocean Solution 2-0-3, the ratio is 0.5 oz per gallon of water for microgreens. Mix it into your water before bottom-watering and check that the pH is between 5.5 and 6.0. Adjust with pH up or pH down solution as needed.

If you are using other nutrients like Masterblend or MaxiGro, the mixing ratios differ. Always follow the manufacturer's instructions and start with a lower concentration for microgreens than what is recommended for full-size plants. Microgreens have a very short growth cycle and do not need heavy feeding.

A general rule: mix your nutrient water in a clean container, test pH, adjust if needed, and use that solution for all your bottom-watering. Pre-mixing a gallon or two at a time saves daily effort. Replace unused mixed nutrient water after about a week to keep it fresh.

Download our Free Fertilizer Ratio Guide for detailed mixing instructions and ratios.

What's the best temperature for growing microgreens?

Most varieties grow well at 65 to 75°F (18 to 24°C). Cooler temperatures slow growth, while temperatures above 80°F can cause poor germination and increased disease pressure.

How often should I water microgreens?

During germination: mist 1 to 2 times daily to keep the medium moist.

After germination: bottom-water as needed (usually 1 to 2 times daily) by adding water to the reservoir tray. The medium should stay moist but not waterlogged.

Kratky systems: check water levels every 2 to 3 days and refill or refresh as needed.

Read our blog: How to Water Microgreens: The Complete Watering Guide

What's the difference between bottom-watering and top-watering?

Bottom-watering: water is added to a reservoir tray beneath the grow tray. Roots absorb water from below. This reduces mold risk and keeps foliage dry.

Top-watering: water is applied directly to the growing medium with a spray bottle or watering can. Good for the germination phase but can increase mold risk during growth.

We recommend bottom-watering for best results.

Do I need a heat mat for microgreens?

Most microgreen varieties germinate well at normal room temperature (65 to 75°F) without a heat mat. However, a heat mat can help in specific situations: if your growing space is consistently below 65°F (like a garage, basement, or unheated room), if you are growing tropical-origin varieties that prefer warmth, or if you want to speed up germination by a day or two.

We have tested heat mats on several crops including sunflower microgreens and found that while they can accelerate the germination phase slightly, the difference in final harvest quality is often minimal when room temperature is already in the 65 to 75°F range. If your growing space stays within that range, a heat mat is an optional convenience, not a necessity.

If you do use a heat mat, place it under the tray only during the germination/blackout phase (the first 3 to 5 days) and remove it once seeds have sprouted and you transition to light. Leaving it on too long can dry out your medium faster and increase the risk of mold.

Can I reuse growing medium between crops?

Silicone reusable mediums: yes, clean and sanitize between grows.

Coco coir: can be reused once or twice if sterilized, but quality degrades. Most growers compost used coco coir.

Soil: do not reuse. Compost spent soil and start fresh each time.

Read our blog: What to Do With Used Microgreen Grow Medium After Harvest

What grow lights do you recommend for microgreens?

For most home growers, basic full-spectrum LED shop lights work great and are very affordable. Position lights 6 to 12 inches above your trays and run them for 12 to 16 hours per day. You do not need expensive specialty grow lights for microgreens. They are not as light-demanding as flowering plants.

For small setups (1 to 4 trays), a 2-foot LED light works well. For larger rack systems, 4-foot LED shop lights are the standard. Look for lights rated at 6500K (daylight spectrum) for best results.

The most important thing is consistency. Microgreens need adequate, consistent light to develop thick stems, vibrant colors, and full flavor. Inadequate light is the number one cause of leggy, pale, underwhelming microgreens.

Learn more about microgreen lighting and find the lights we suggest here.

Do I need expensive grow lights, or will cheap LEDs work?

For microgreens, you do not need expensive specialty grow lights. We have tested cheap LED shop lights against dedicated grow lights across multiple crops, and the difference in final harvest quality is often minimal for microgreens. Unlike flowering plants that need specific light spectrums to produce fruit, microgreens primarily need adequate, consistent light to develop thick stems and vibrant color during their short 7 to 14 day growth cycle.

A basic full-spectrum LED shop light rated around 6500K (daylight spectrum), positioned 6 to 12 inches above your trays and running 12 to 16 hours per day, will produce excellent microgreens. You can find these at most hardware stores for $15 to $30. The most important factors are brightness, consistency, and distance from the tray, not the price tag.

That said, if you are running a multi-rack commercial setup, dedicated grow lights with higher output and better efficiency can justify the investment over time through electricity savings and slightly improved crop uniformity.

Read our blog: Microgreen Lighting: Best Grow Lights After 7 Years of Testing

What's the best water for growing microgreens?

In order of preference:

  • Filtered water: removes chlorine, chloramine, and sediment. A basic carbon filter works well.
  • Tap water (left to sit 24 hours): allowing tap water to sit uncovered lets chlorine gas off. Note that this does NOT remove chloramine, which many municipalities now use instead of chlorine.
  • Tap water (direct): works fine for many growers, depending on local water quality. If you notice poor germination, off flavors, or slow growth, water quality may be a factor.

Avoid distilled water for hydroponic growing, since it lacks the trace minerals plants benefit from. If using reverse osmosis water, you will need to add back minerals through your nutrient solution.

If you suspect water quality issues, consider getting a basic water quality test kit or contacting your local water utility for their annual water quality report. For everything watering-related, see our complete watering guide.

Shipping & Orders

Do you offer free shipping?

Yes. Free shipping on all US orders over $65.

How long does shipping take?

Orders typically ship within 1 to 3 business days. Delivery takes 3 to 7 business days depending on your location, weather, holidays, and the shipping service. You will receive a tracking number once your order ships. Once your order leaves our hands and is scanned into the shipping service, we do not personally have control over the timing or any delays.

Do you ship internationally?

Currently, we only ship within the United States and Canada.

What's your return policy?

We offer a 1-year warranty on trays, tray kits, and reusable grow mediums. If you experience any issues, contact us at info@onthegrow.net. View our full return policy.

Do you offer bulk or wholesale pricing?

For bulk orders or wholesale inquiries, please email info@onthegrow.net with details about your needs. We do not typically do these types of transactions, but we might consider it.

Can I cancel or modify my order?

Contact us immediately at info@onthegrow.net if you need to modify your order. Once an order ships, we cannot make changes, but you can return items under our standard return policy.

Business Questions

Can I sell microgreens I grow with your products?

Yes. Our products are made for both home and commercial use. Many of our customers run successful microgreens businesses using our trays and grow mediums. Always do your own research too.

Read our guide: How to Sell Microgreens: Pricing, Permits, and Starting a Business

Do I need special licenses to sell microgreens?

Requirements vary by state and locality. Common needs include:

  • Cottage food license or commercial kitchen access
  • Business license
  • Food handler's permit
  • Liability insurance

Check with your local health department and small business administration for specific requirements in your area.

How do I price my microgreens?

Pricing varies by region and market. Research local competitors and consider:

  • Production costs (seeds, supplies, utilities)
  • Labor time
  • Packaging
  • Delivery/market fees

Many growers charge $25 to $40 per pound wholesale and $35 to $50+ per pound at farmers markets. These are general industry figures, not guarantees. Actual results vary widely by market.

Where can I learn more about starting a microgreens business?

Our Microgreen Masterclass course includes a section on business basics. Our book Becoming a Microgreen Master also covers business fundamentals, and our blog How to Sell Microgreens walks through pricing, permits, and getting started.

How much does it cost to get started growing microgreens?

Basic startup (home growing):

  • Tray kit with reusable medium: $30 to $60
  • Seeds (first batch): $10 to $20
  • Grow light (optional): $20 to $50

Total: about $60 to $130 to start. Commercial startup costs vary based on scale. Our Masterclass covers business budgeting.

What's the cost per tray after initial setup?

With reusable systems, your ongoing costs are minimal:

  • Seeds: $1 to $5 per tray depending on variety
  • Fertilizer (hydroponic): about $0.25 per tray
  • Water/electricity: about $0.50 to $1 per tray

Total: about $2 to $6 per tray. Your reusable mediums last months, so there are no ongoing medium costs like with disposable options.

Where can I sell microgreens?

Common sales channels for microgreens include:

  • Farmers markets: the most popular starting point for new growers. Direct customer interaction and typically the highest per-unit pricing.
  • Restaurants and chefs: many chefs actively seek local microgreen suppliers for fresh, high-quality garnishes and ingredients. Approach local restaurants with samples.
  • Grocery stores and co-ops: some local and specialty grocery stores will stock locally grown microgreens, especially organic and health-focused retailers.
  • Online/direct delivery: some growers build subscription models delivering directly to customers in their area.
  • Meal kit companies: an emerging channel as meal kit services seek fresh, locally sourced ingredients.

Each channel has different pricing expectations, volume requirements, and logistics. Our Microgreen Masterclass covers business basics including sales channels and pricing strategies, and our Best Microgreens for Restaurants guide covers what chefs actually buy. Always do your own research too.

How do I find restaurant clients for my microgreens?

Start by visiting local restaurants that focus on farm-to-table, health-focused, or upscale dining. Bring fresh samples so chefs can see the quality and taste the product. Many chefs appreciate the visual appeal and flavor intensity that fresh, locally grown microgreens bring to their dishes. Build relationships, be consistent with quality and delivery, and start small. Even a few restaurant accounts can provide steady weekly revenue.

Read our guide: Best Microgreens for Restaurants: What Chefs Actually Buy

Brand & Content Use

Can I use "On The Grow" in my business name or social media handles?

No. "On The Grow" is a registered trademark owned by On The Grow, LLC. You cannot use our brand name or any variation of it (including On-The-Grow, OnTheGrow, @YourFarm_OnTheGrow, and so on) in your business name, social media handles, marketing materials, or product listings. This includes using our name to suggest affiliation, endorsement, or partnership.

Using our trademarked name creates confusion with our customers and violates trademark law. We protect our brand to maintain trust with our community.

Can I redistribute your free PDFs or content to my customers?

No. All of our content, including free PDFs, videos, blog posts, and guides, is copyrighted material owned by On The Grow, LLC. You cannot download and redistribute our materials to your customers, even if you are not charging for them.

What you CAN do: share links to our content. Feel free to direct your customers to our website, YouTube channel, or Facebook page where they can access our free resources directly. This helps your customers while respecting our intellectual property.

Can I use your videos or images in my marketing materials?

No. You cannot use our videos, photos, or other content in your own marketing, website, or social media without written permission. This includes screenshots from our videos, images from our website, or excerpts from our guides.

If you want to reference our content, link to it instead.

Are you hiring? Can I work for On The Grow?

We are not currently hiring. On The Grow operates as a two-person team, and we do not have plans to expand at this time. We do not accept applications for employment, partnerships, or collaborations unless we publicly announce an opening.

Can I say I was "trained by On The Grow" if I took your Masterclass?

You can say you completed the Microgreen Masterclass or learned from On The Grow's educational content. However, you cannot claim to be certified, endorsed, affiliated with, or employed by On The Grow. We do not offer certifications or formal credentials.

Can I link to your content on my website or social media?

Yes. We encourage you to share links to our website, YouTube videos, Facebook page, and free resources. Linking helps your audience find valuable information while respecting our copyright and brand.

I have a question about using your brand or content that isn't answered here.

Email us at info@onthegrow.net with your specific question. Please note that we generally do not grant permission for brand name use or content redistribution.

Purchasing Questions

I used Shop Pay Installments. Can you change my payment plan?

No. Shop Pay Installments is a financing service provided by Affirm/Shopify, not by On The Grow. We received full payment for your order and have no access to your payment plan. Contact Shop Pay support for payment plan questions.

I want to return something I bought with Shop Pay Installments. Do I still owe the payments?

We will refund Shop Pay/Affirm when we process your return (per our Return Policy). How that affects your payment plan is determined by Shop Pay/Affirm's policies. You should contact them directly to understand how returns affect your installment agreement.

Can I cancel my order to cancel my payment plan?

No. Canceling your order with us does not automatically cancel your payment agreement with Shop Pay/Affirm. We will process a refund to them if we can cancel before shipping, but you must work with Shop Pay/Affirm regarding your payment obligation.

Shop Pay denied my payment plan. Why?

Shop Pay/Affirm makes all financing decisions. We have no information about why you were denied. Contact Shop Pay customer service for questions about your application.

A Few Quick Disclosures

This page contains affiliate links. As an affiliate for True Leaf Market, Amazon, and other partners, we may earn a small commission on qualifying purchases at no extra cost to you. We only link to products we use and recommend. See our full Affiliate Disclosure.

Any growing results, comparisons, and product opinions shared here come from our own first-hand testing in our specific controlled grow space (we hold roughly 75 to 80°F, humidity at or below 35%, with specific lighting and airflow). Results and opinions can vary, so we always encourage you to run your own experiments.

Nutrition and health information on this page is for educational purposes only. We are educators and growers, not nutritionists, veterinarians, or medical professionals. Consult the appropriate qualified professional for dietary, health, or pet-care advice.

Still Have Questions?

Email us: info@onthegrow.net

Watch tutorials: YouTube Channel (350+ videos)

Join our community: follow us on Facebook and Instagram

Download free resources: Free PDF Guides

Happy growing!

Updated: June 2026