The manufacturer has many years of experience developing Rockwool products in the Netherlands and is preferred by some of the largest industrial propagators in the world. The quality of their newest Rockwool cubes, plugs, and starter sheets is by far the best on the market with superb air to water ratio and a fiber structure that holds water longer and has less resistance for the roots to grow in, resulting in stronger roots. Rockwool also encourages faster initial rooting and its firmness is guaranteed. Blocks measure 1.5" x 1.5" x 1.5"

• Inorganic & Sterile Growing Medium
• A Superior Medium For Rooting Cuttings
• Encourages Faster Initial Rooting & Its Firmness Is Guaranteed
• Provides 20% Air Space When Saturated - Absorbs nutrient solution while retaining plenty of oxygen for rapid root growth!
• Cubes Measure: 1.5" x 1.5" x 1.5"