Rock wool is made from molten rock spun into fibers like cotton candy. They are great for rooting cuttings or germinating seed. Soaking them overnight in water and adding seeds or cuttings the next day is recommended. From there you can transplant into any growing medium, soil or hydro. They are manufactured in Holland. Rockwool is very versatile and will grow you 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.
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