Growing microgreens in Small (Miniature) Sprouting Trays? This reusable silicone grow medium is pre-cut to fit perfectly, giving you a clean, soil-free growing surface that holds up for months of continuous use.
Key Specifications
- Pre-Cut Dimensions: 4.5" x 7.825", fits Small (Miniature) Sprouting Trays perfectly
- Hole Size: 1.2mm, great for moisture retention
- Material: Food-grade platinum-cured silicone with a fiberglass core for durability. 3rd party tested for FDA compliance. LFGB tested and compliant.
- Lifespan: Rated for 20 to 30+ grow cycles per sheet with proper care
Why Growers Choose Silicone
The flexible design makes handling, seeding, and cleanup easier in the compact sprouting tray format. It supports moisture retention and root aeration while staying gentle on your hands when you harvest and clean up. Root removal is faster than it is on a rigid surface, which matters when you are running several small trays at once.
Works well with most popular microgreen varieties including Sunflower, Radish, Broccoli, Arugula, Basil, Cabbage, Kohlrabi, and most Brassica family crops.
Care and Maintenance
- Cleaning: After you harvest, use our Microgreen Medium Scraper/Cleaning Tool to remove root residue. Wash with warm water and a free-and-clear dish soap, or another silicone-safe, food-safe soap.
- Sanitization: For deeper sanitation between grows, carefully pour boiling water over the mat or submerge it for 1 to 2 minutes. Allow to air dry fully before reuse.
- Read our complete silicone care guide for stain troubleshooting and long-term maintenance tips.
Seed Compatibility
✅ Works Well With: Sunflower, Pea, Radish, Broccoli, Kale, Cabbage, Arugula, Basil, Mustard Greens, Kohlrabi, and most Brassica varieties
⚠️ More Challenging: Amaranth, very fine Mustard seeds, and other tiny seeds may require adjustments
❌ Not Recommended: Swiss Chard, Beets, and Cilantro, which perform better in soil or coco coir
💡 Best Without a Medium: Pea varieties with aggressive root systems often perform best directly on mesh trays
Prefer Stainless Steel?
We offer this same pre-cut size in 316-grade stainless steel if you want a rigid surface that resists cuts and tears. Not sure which suits your setup? Our 10x10 Sampler Pack includes both materials so you can test them side by side.
More Sizes Available
- 10x20 Size for standard full-size trays
- 10x10 Size for half-size growing
- Large Sprout Tray Size for larger sprouting systems
Browse all reusable grow medium sizes here.
1-Year Warranty
All silicone mesh screens are backed by our 1-year warranty. Grow with confidence.
Important Product Disclaimers
- Please review our Reusable Grow Medium Safety Disclaimer before purchasing
- Trays, seeds, and other items shown in photos are NOT included
- Silicone staining: Some seed varieties may cause natural staining on the surface. This does not affect performance.
- Fiberglass core: Replace your mat if you notice tears, deep cuts, or significant wear that could compromise the fiberglass core integrity. Learn more about replacement timing
- Not recommended for: Swiss Chard, Beets, Cilantro
- NUTRITIONAL CONTENT DISCLAIMER: This product is an inert growing medium that does not add or remove nutrients from your crops. We make NO claims about nutritional content or nutrient density of microgreens grown using this product. Nutrient density depends on many factors outside our control including seed variety, water quality, light, fertilizers, and growing conditions, not the growing medium itself. We have not conducted laboratory testing and are not nutritionists. For the complete nutritional disclaimer, see our Safety Disclaimer page.