Grodan Rock Wool 4G Block With Hole Insert - 7.5 X 7.5 X 6cm 

 Grodan Delta 4G Blocks are ideal for use with small plants such as strawberries and peppers as well as cuttings (clones) and seed raising.

• Delta 4G blocks measure 7.5 x 7.5 x 6cm approx
• Premium quality rockwool
• Individually wrapped and are ideal for small plants and transplanting
• Often referred to as a 3” cube without hole
• Grooved based for improved drainage
• Can be used for direct seed or clone sowing
• Blocks can also be placed on top of a Slab for larger growing volume
• Grodan Delta guarantees an optimum balance of air and water