Gro-Blocks™ are similar to a plant container. Need a 4 in pot? Then choose a 4 in Gro-Block™. Small plants can be fully grown in our larger Gro-Blocks™. Holes are perfect size for any 1.5 in starter plug. Come in packs labeled with instructions.
Whether starting your seeds and cuttings in A-OK Starters, Macroplugs, or Mini-Blocks it is a good idea to transplant into a 3” or 4” block.
You know it’s time to transplant to the Gro-Block when roots coming out of the starter are about 1” long.
Just place your Mini-Block on top of the 3” or 4” block without the hole, or your Macroplug/A-OK into the 3” or 4” block with the hole and watch your plant flourish.
- Gro-Blocks : Delta 10 Large 4"
- Sizes in inches : 4x4x4
- Hole sizes available : 1.5"
-Sold Individually, Blocks/Package of 6 unwrapped, or Case with 24 Package/144 unwrapped Blocks