Grodan Rockwool Cubes for Propagation, Indoor Seed Starting (1 inch) 200 Cubes Per Sheet, 4 Sheets

Grodan Rockwool Cubes are one of our most popular items. Suitable for a wide range of plants, Rockwool Cubes are effective in growing anything from tomatoes, lettuce, flowers and even aquatic plants. The cubes are arranged in sheets that make propagating and transplanting easy. This is a clean product, no pollutants or harmful bacteria. It does not lock up or release any substances, ensuring all water and nutrients are available to the plant. It is easy to control and steer the growth of the crop to achieve higher yields than seen in soil-bound cultivation. Stone wool can be recycled (eg composting).