Rockwool Grodan Cubes Sheet of 98 Cubes

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Description Specs FAQs Rock wool is made from molten rock spun into fibers like cotton candy. They are great for rooting cuttings or germinating seeds. Soaking them overnight in wa ter and adding seeds or cuttings the next day is recommended. From there you can transplant into any growing medium, soil, or hydro. Rockwool is very versatile and will grow plants for months. No Transplant Shock Sheets of 98 cubes Individual blocks measures 1.5 inches by 1.5 inches square by 1.57 inches tall Are pre-punched with small holes for small seeds or cuttings Each sheet fits into a standard 1020 tray. Show more