Grodan Rockwool Cubes Sterile Inorganic Growing Medium for Seed Starting & Rooting Cuttings (1.5 Inches) 49 Cubes

Kickstart your garden’s growth with Grodan Rockwool Cubes—designed to give your seedlings and cuttings the perfect balance of air and moisture for healthy root development!

Key Product Details

• Premium Inorganic Growing Medium – Made from spun molten rock, Grodan Rockwool cubes provide a sterile, nutrient-free environment perfect for rooting cuttings and promoting healthy plant growth.
• Optimal Air and Water Balance – With 20% air space when saturated, these cubes ensure excellent oxygen flow and moisture retention, creating ideal conditions for strong root development.
• Easy to Condition for Best Results – Simply soak the cubes for 8 hours in water with a pH of 5.0-5.5, then rinse with pH 7.0 water to prepare them for planting and maximize rooting success.
• Consistent Size for Uniform Growth – Each 1.5-inch cube is precisely sized to support consistent seedling growth and easy handling during propagation and transplanting.
• Versatile and Reusable – Perfect for hydroponics, greenhouses, and home gardening, these 49-pack cubes can be rinsed and reused, offering long-term value and sustainable growing.

Promote healthy root development and efficient propagation with Grodan Rockwool Cubes. Made from spun molten rock, this sterile, inorganic growing medium offers a nutrient-free environment ideal for rooting cuttings and starting seeds. Each 1.5-inch cube provides 20% air space when saturated, balancing moisture retention with optimal oxygen flow for vigorous root growth. Easily prepared by soaking in pH-adjusted water, these cubes ensure uniform size and consistency for seamless transplanting. Perfect for hydroponic systems, greenhouses, and home gardening, this 49-pack of reusable Rockwool cubes supports sustainable, high-quality plant propagation.