Grodan Rockwool Block 35mm

Grodan rockwool blocks are world-renowned as one of the best growing mediums and are used by the Danish plant medicine industry. The specially developed delta rockwool provides the plants' roots with optimal amounts of water and air, resulting in strong and rapid growth. They can be used in everything from soil and coconut pots to growing systems and self-watering systems.

They fit the size so that they can be used together with our 25mm Grodan Rockwool Blocks or 35mm Grodan Rockwool Blocks.

The optimal pH value when using Grodan rockwool blocks is between 5.5 and 6.5.

Size: 150 x 150 x 142 mm.