This 10" x 20" mesh-bottom tray is designed specifically for soil blocks. The open grid lets air reach the base of every block, so roots air-prune on all six sides rather than pooling at the bottom in standing moisture. That six-sided air pruning is what separates a soil block transplant from a rootbound cell-pack transplant: branching roots instead of circling ones, faster establishment, better yields.
 
Bottom water into a solid nursery tray underneath, let the blocks wick it up, and the mesh ensures even absorption without saturation. Fits standard 1020 footprint, compatible with all soil blocker sizes — ¾" micro blocks, 2" standard blocks, and 4" pot-up blocks all sit cleanly on the grid without tipping or sinking. Durable plastic construction, reusable season after season.
 
Capacity (approximate):
¾" micro blocks: 200+ per tray
2" blocks: 40–50 per tray
4" blocks: 10–12 per tray
 
Soil blockers in all sizes are available to use onsite through the East Portland Plant Buying Club Tool Library. Free by appointment. Pre-mixed soil blocking mix available for purchase.