Grodan Rockwool Cubes

Grodan Rockwool Cubes

In Stock
  • 3" Small Hole
  • 3" Large Hole
  • 4" Small Hole
  • 4" Large Hole
  • 6" Large Hole
Variation Name
3" Small Hole
3" Large Hole
4" Small Hole
4" Large Hole
6" Large Hole

Description
Rockwool is an inorganic and sterile growing medium made from spun molten rock. A superior medium for rooting cuttings, rockwool provides 20% air space when saturated, and does not contain nutrients. It is recommended that rockwool be conditioned by soaking for eight hours in a pH 5.0-5.5 and then rinsing with pH 7.0 water. Water daily.