Product 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.

Product Details

• Amazon Sales Rank: #25752 in Lawn & Patio
• Brand: Grodan

Features

• Great for starting seedlings or cuttings.
• Easy to Use
• Use in soil or hydroponic gardens
• A Favorite by growers worldwide

Customer Reviews

pleased
becuse they wernt in a bag ,you should place in boiling water for 15 min to kill anything might inhibit ur growth