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Seed Starter Kit - Soil Block Trays, 1020 Trays, Humidity Domes

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Soil Block / Rockwool Mesh Bottom Seedling Starter Kit

Made out of Extra Strength, BPA Free, Polypropylene plastic.  Get your seed starting off to a success by using the right equipment.

A (1) Pack Kit Includes:

  • Soil Block Deep Mesh Bottom Tray
  • 6" Humidity Dome Clear
  • 1020 Deep Propagation Flat Seed Tray (without holes)


  • 1020 tray and mesh flats our made of of PP #5 food safe plastic
  • Heavy Duty Durable plastic used on each component for many years of reuse saving you money and time from replacing your seed starting equipment
  • Humidity Dome controls airflow with adjustable built in vents
  • Mesh bottom provides maximum drainage while still holding growing media
  • Each seed starter component is stackable for easy storage
  • 1020 Tray and Mesh Bottom tray are dishwasher safe for easy cleaning

Tray Size: 21¼" x 11¼" x 2½" deep for both mesh tray and 1020 tray
Humidity Dome Size: 21¼" x 11¼" x 6" height with handle (5½ interior space)


Our collection of Extra Strength seedling trays and humidity domes are exclusively sold and designed by Bootstrap Farmer.  

We have always been disappointed with the brittle and flimsy quality of seed trays and domes found in big box stores and online. Our dissatisfaction led us to produce our own seedlings trays that could withstand abuse and transportation even while filled with material.  No longer do you need to buy new trays each season saving you time and frustration with our seedling trays.

They are a great way to grow with soil blocks, rockwool cubes, fodder, micro-greens, or wheatgrass.

Keep moisture in with our extra strength humidity dome with included vents to control air flow. 

Free shipping on orders over $49 to Contiguous US
Shipping Policy

Most products will ship from our facility in 1 to 2 business days after the order is placed.  Express shipments placed after 12PM EST will be shipped out next business day. Full details can be found on our Shipping Policy Page

Returns Policy

Returns can be made on most products within 30 days of purchase. After 30 days we unable to offer a refund or exchange. Certain products are non-returnable. For full details visit our Returns Policy


Ask a Question
  • I want to grow fodder from barley (or wheat berry) indoors during winter, without soil. Im new to all this... Would I use the "MICROGREEN TRAY HOBBY STARTER" or the "SEED STARTER KIT". thanks

    Start with this one: https://www.bootstrapfarmer.com/products/extra-strength-seedling-starter-tray-kits-deep-soil-block-trays

  • I purchased one of these kits over the winter and am getting ready to try growing annuals from seeds for the first time. While researching, I've seen some systems use a flat sponge-like sheet for holding water. Is this necessary? Also, what is the recommended level to fill the water? Thanks!

    Rockwool cubes?  You can certainly use those.  They work very well, especially for beginners.  Alternatively, you can use you a soil or potting mix to start your seeds.   Best to put a 1/2" of water on the bottom and use the dome to retain the humidity.   Without the dome, you can also fill the bottom tray with water just so it touches the bottom cells, wicking up the water.  In order to avoid over saturation, a little air blowing in the room is using good propagation practice.   If you want to avoid using the dome at any point and also want to avoid lots of water, just be sure to mist your seedlings a few times a day.  Hope this helps!

  • Can I use a heat pad under this? I'm starting seeds in a fully-enclosed, but unheated utility room. Typically I only see heat pads underneath trays that don't utilize a water bed underneath - so I don't want to heat just the water and encourage mold growth around the roots. Maybe I should just use a grow light instead? (asked on Amazon, too - sorry to duplicate!)

    Yes you can absolutely use a heat pad under these trays even with a water bed.  We do this exact same thing when we grow our seedlings with great success. 

  • I want to grow micro greens - what is the best set up for me to buy? Preferable with nothing but the seeds.

    Most poeple just need a set of the microgreen trays with hole and microgreen trays with no holes.  https://www.bootstrapfarmer.com/products/microgreen-trays

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