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Air Prune Propagation Tray - 72 Cell

Pack Size

Alternative to Soil Blocking

Get the air pruning benefits of soil blocking without the mess! These farm trays allow for airflow above and below the soil, so newly established seedlings get optimal growing conditions for a strong start. Gain healthier root systems and stronger transplants using these air pruning block trays. Start all of your flowers, herbs, and vegetables in these seed-starting block trays. Also available in bright colors!


  • Stronger, healthier root systems - Airstrips in each cell prune the roots to prevent root circling
  • Perfect for delicate starts - Includes large bottom holes for easy removal
  • Ample airflow - Air channels between each cell provide even air circulation
  • Dimensions -  19-13/16" x 9-14/16" x 2-5/16"
  • Individual Cell Dimensions- 1.37" from the top, 2.29" tall, .87" hole, and 1" at the bottom
  • Durable, heavy-duty to last a lifetime - Backed by a 2 Year Warranty 
  • Compatible with our shallow 1020 trays for easy bottom-watering. Also available in colors!
  • Made from BPA-free, food-safe plastic using a Prime FDA Impact Resistant Polypropylene
  • Made in the USA
  • Available in black, green, orange, blue, pink, purple, and multi-color packs

How to Use Air Prune Seed Starting Trays

Fill trays with well-draining soil, taking care not to overfill. Lightly compress soil until firm but not compacted. Mist the soil lightly and plant seeds into the media. After planting, bottom-watering can commence using a 1020 shallow tray. Using a heat mat and humidity dome during early germination is also recommended. Read more about starting seeds in Seed Starting 101: Starting Seeds Indoors for Your Garden.

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
  • What are the cell dimensions?

    The cell dimensions are 1.37" square, are 2.29" tall, and taper to 1" square at the bottom. The drainage hole in the cell is .87".

  • These trays are very robust & providing good results. Filling them with seed starting mix is a bit messy though, because of the spaces in between the planting cells. Is there any simple way to block off those unused spaces during filling, to make the process more straightforward and less messy?

    We have a video all about how to fill an air prune tray!


  • Will these fit into the extra strength 1020 tray? I prefer not to use the shallow trays if possible.

    Yes they will! They will fit but just be aware that since they are the same depth as the tray they're nestling into, that removing them will be a bit more difficult. Placing a finger into the air holes at the top should make lifting them. out fairly easy.

  • I have a standard 1020 (72) cell vacuum seeder and automated dibbler setup . Could these existing tools be used with the air prune trays?

    We recommend you measure the dimensions of our 72 air prune tray, including the cell size against your vacuum seeder. Because these trays are specifically designed to fit the dimension of our trays, it is difficult to say if they will fit another brand of trays or seeding equipment.

  • Will the air pruning tray fit into the s 1020 shallow microgreen trays?


  • I have 2 questions: 1. Are these trays made from recycled plastic? 2. It seems that the hole at the bottom of each cell is rather large. How do you prevent the potting mix from just falling through and out the bottom?

    Both the black and colored air prune trays are virgin plastic. A pre-moistened mix will help reduce the amount of matter that falls through the drainage hole.

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