Rockwool A-OK Starter Plugs for starting seeds and rooting of cuttings prior to plugging into the larger Gro-Blocks.
A-OK plugs come labeled with instructions in a shrink-wrapped sheet that fits a standard 10 x 20 tray
Grodan A-OK 25/40 1in x 1in Plugs (200/Sheet)
Grodan A-OK 36/40 1.5in x 1.5in Plugs (98/Sheet)
Grodan A-OK 50/40 2in x 2in Plugs (50/Sheet)
