Microgreen Trays and Kits: Sizes and Which to Choose

The right microgreen tray depends on how much you want to grow and where. The 10x20 is the standard size that most domes, grow mediums, and shelving are built around, the 7x14 kit is our beginner setup, the 5x5 works for single variety runs and countertops, and the 10x20 Kratky kit grows passively in a hydroponic reservoir. This page links every tray and kit we carry and the guide that goes with each.

We have grown microgreens since 2018 and we stack, fill, and wash our trays constantly, so we only carry trays built to hold up to that. Pick a size below, then follow the guide link to see how we grow in it.

Bootstrap Farmer 10x20 Heavy Duty Shallow Microgreen Trays

The standard size. Each set stacks a mesh tray on a no-hole tray, and it fits our 10x20 reusable silicone grow mediums, domes, and grow racks. Shop the 10x20 trays or learn how to grow in 10x20 trays.

7x14 Microgreens Growing Kit: Trays, Dome and Silicone

Our beginner kit. It comes with trays, a humidity dome, a reusable silicone grow medium, and a scraper tool, so you can start without piecing parts together. Shop the 7x14 kit or read the 7x14 growing guide.

10x20 Kratky Hydroponics Microgreens Kit

A passive hydroponic setup that uses a drip tray as the reservoir under a mesh tray, with two reusable silicone grow mediums included. Shop the Kratky kit or learn the Kratky method. For a smaller version, see Red Pak Choi in a Mini Kratky Tray.

Bootstrap Farmer 5x5 Shallow Microgreen Trays, Color Pack

A pack of small shallow trays in assorted colors, good for single variety runs and countertop growing. Shop the 5x5 trays or see how to grow in an ice cube tray for another small format.

Microgreen Tray Clip Labelers, 3-in-1, 10-Pack

Once several trays are in blackout they all look the same. These clip-on labelers, designed by us, keep each tray identified. Shop the clip labelers or read how they work.

All Microgreen Trays

Our full tray collection in one place. We no longer carry the Bootstrap Farmer 10x10 trays, but our 10x10 reusable silicone grow medium is still sold, and the 10x10 Trays and Flats collection has 10x10 options.

Which Size Should I Choose?

Just starting out: the 7x14 kit, since it includes the dome, a medium, and a scraper
Growing for a household or for sale: 10x20 trays, the standard size, which fit racks and our 10x20 reusable mediums
Small batches, single varieties, or a countertop: 5x5 trays
Hydroponic and low maintenance: the 10x20 Kratky kit

Free Ultimate Microgreen Tray and Kit Guide

A free PDF with step by step instructions for every tray style we use. Pair it with the Free Tray-Specific Microgreen Seeding Guide for seed amounts by tray type.

Reusable Grow Mediums for Your Tray

Match a reusable silicone medium to your tray size, and check which seeds work on it. Our grow lights and rack setup page covers the shelves and lights that go with your trays.

Microgreen Tracker

Log each tray from seeding to harvest, and use the automatic seed density calculator to get the seed amount for your tray size. It runs in your browser, installs to your home screen, and comes with a 7 day free trial. Try Microgreen Tracker Free.

Trays and Kits FAQ

What size microgreen tray should I start with?

For a first setup we suggest the 7x14 kit, which includes trays, a humidity dome, a reusable silicone grow medium, and a scraper. If you already know you want to scale, the 10x20 is the standard size.

What is the standard microgreen tray size?

The 10x20 is the standard size. Most domes, grow mediums, and shelving are built to fit it, which is why we use it for most of our production.

What comes in the 7x14 microgreens kit?

The 7x14 kit includes trays, a humidity dome, a reusable silicone grow medium, and a scraper tool.

What is in the Kratky kit?

The 10x20 Kratky kit includes a drip tray that acts as the reservoir, a mesh tray, and two reusable silicone grow mediums. Kratky is a passive hydroponic method, so there is no pump.

Do you still sell 10x10 trays?

We no longer carry the Bootstrap Farmer 10x10 trays. The 10x10 reusable silicone grow medium is still sold and fits standard 10x10 trays, and our 10x10 Trays and Flats collection has options.

Which reusable grow medium fits which tray?

Match the medium to the tray: 10x20 for standard 10x20 trays, 10x10 for 10x10 trays, and the 7x14 medium for the 7x14 kit. See our reusable grow medium page for every size and the seeds that work on each.

How do I keep trays identified in blackout?

Our 3-in-1 tray clip labelers clip onto the tray so each one stays identified, even when several trays look the same in blackout.

Not sure where to begin? Start with the 7x14 kit and the free tray and kit guide. The Microgreen Masterclass is there when you want the full walkthrough.

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The results and opinions on this page come from our own first hand experience in our grow space. Your climate, water, seed, and setup are different, so your results can vary. For our full terms, see our Disclaimer and Affiliate Disclosure.

Happy growing!