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Reusable Grow Mediums

This is the product line we built the business around. Food grade platinum cured silicone, made from virgin material, rated for 20 to 30 plus crop cycles.

Harvest, rinse the root mat off, let it dry, and it goes back in the tray. No bag of soil to store or haul, no stack of grow mats to buy and throw away every crop.

We make them in 10x20 and 10x10 for standard flats, plus small and large sprout tray sizes for the smaller footprints. The 1.2mm is our standard thickness. The 1.7mm large hole version is built for bigger seed, where smaller holes let seed sit on top instead of settling in. One version pairs silicone with a stainless steel screen.

If you're not sure which combination fits your seed, the sampler includes multiple options so you can test against what you actually grow before committing to a stack of one type.

9 products
  • Red cabbage microgreens growing on 1.2mm reusable silicone grow medium in 10x20 tray showing healthy root structure on bottom of mat
    from $15.97
    from $15.97
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  • Arugula microgreen seeds in early germination on On The Grow 10x10 reusable silicone grow medium showing 1.2mm mesh holes
    from $9.97
    from $9.97
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  • Wheatgrass, sunflower, and pea seeds displayed on the On The Grow 1.7mm large hole reusable silicone grow medium
    from $4.97
    from $4.97
    $8.97
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  • Radish microgreens growing on On The Grow silicone reusable grow medium in small sprouting tray, showing vivid pink stems
    from $4.97
    from $4.97
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  • Microgreen seeds germinating on On The Grow small sprouting tray reusable silicone grow medium showing 1.2mm mesh holes
    from $7.47
    from $7.47
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  • On The Grow 10x10 reusable grow medium sampler pack showing two stainless steel and two silicone microgreen grow mediums
    $14.97
    $14.97
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  • Close-up of broccoli microgreens growing on the On The Grow 7x14 reusable silicone grow medium
    $7.97
    $7.97
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  • Sunflower and broccoli microgreen seeds on On The Grow reusable steel grow medium showing seed size relative to 1.2mm mesh
    from $11.97
    from $11.97
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  • Microgreen seeds germinating on On The Grow stainless steel reusable grow medium in small sprouting tray, closeup showing 1mm mesh
    from $6.97
    from $6.97
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