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Achieve an optimum balance of oxygen to nutrients with Grodan Delta Gro-Blocks™ for rapid plant growth. A sustainable and environmentally friendly growing medium.
• Manufactured from rockwool substrate, these Gro-Blocks™ are completely sterile, lightweight and easy to use. Unique hydrophilic fiber makes crop production easy to control by allowing efficient use of water and nutrients.
• Ideal for direct sowing of our Grodan A-OK Starter Plugs, sold separately. When seedling roots coming out of plugs are 1” long, simply place plug in Gro-Block™ hole.
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.
Grodan GRO-BLOCKS DELTA 4X4X4''
Detailed description
- Gro-Blocks : Delta 10 Large 4"
- Sizes in inches : 4x4x4
- Hole sizes available : Big hole
- Blocks/Package : 4
Grodan GRO-BLOCKS DELTA 4X4X4'' (144)
Detailed description
- Gro-Blocks : Delta 10 Large 4"
- Sizes in inches : 4x4x4
- Hole sizes available : Big hole
- Blocks/Package : 6
- Blocks/Case : 144
Grodan GRO-BLOCKS DELTA 4X4X2.5'' (216)
Detailed description
- Gro-Blocks : Delta 6.5 Small 4"
- Sizes in inches : 4x4x2½
- Hole sizes available : Big hole
- Blocks/Package : 6
- Blocks/Case : 216
