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  • Seed Trays
  • 4 Cell Plug Tray Inserts

    USA Made 4 Cell Trays in Color!

    Proudly made in the USA, these larger 4-cell plug inserts are deeper for growing varieties of crops that need a little more room. Eight of these removable inserts fit in a Bootstrap Farmer 1020 tray. Made out of food-safe, heavy-duty polypropylene plastic and built to last many seasons. Color code your seedlings in these insert plug trays.

    Available in black, blue, green, purple, pink, orange, and multi-color packs.


    • Made from FDA Prime Grade Extra Strength Polypropylene (#5 BPA free) plastic
    • Extra Large 3/4" Drainage Hole makes for an effortless seedling removal. 
    • These 4 Cell Inserts are designed with Air Prune technology. Air channels are added on each side to prevent root circling. Air-pruned roots are shown to provide healthier and more vigorous growth. 
    • Proudly made in the USA, our Seed trays are guaranteed to last at least two years.
    • Eight inserts fit per 1020 tray, 4 inserts fit in a 1010
    • Perfect for up-potting peppers and tomatoes.
    • Not compatible with 1020 and 1010 humidity domes as fit is snug. 


    • Seed tray insert 5 1/4" x 5 1/4" x 4" tall 
    • Each cell in the tray insert is 2 3/8" on top, which tapers down to 1 1/4" at the bottom.
    • Air pruning slits measure - 2 1/2" long -  slit width is 1/8"

    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
    • This is about the quantity...... size = 40 is that 40 - 4 cell inserts or 10 - 4 cell inserts ?

      It is 40 of the 4-cell inserts.