Summit Root Tutor 72 Tray Black 3.5 Deep 50/CS

Distinguishing Root Tutors from regular plugs trays is easy- Root Tutors feature internal channels for root directioning and depth for increased gradient ratings. And, the individual plug sizes are larger (Tray Size: 10 1/2"x 21").
Features & Benefits:
*Channels guide roots down, reducing root circling
*Large bottom holes stimulate air pruning
*Star pattern encourages root branching