Grodan Rockwool Grow Cubes 1cm

These are tiny 1cm square cubes of Grodan Rockwool designed to be used as pot growing media. Plant your seedling or cutting on into 5 Litre or bigger pots containing the growing cubes and then water with a hydroponic nutrient solution. Cellmax is clean and lightweight with good air to water retention properties which proves easy to use and very effective.