NUTRIFIELD STONEWOOL SLAB 900 X 200 X 75MM ROCKWOOL

The Nutrifield Stonewool slab 900mm x 200mm x 75mm high is designed for propagation. It is suitable for both seed raising and cuttings. It is made of Rockwool (spun basalt) and is a perfectly sterile medium not containing heavy metals. The cubes should be washed with warm pH adjusted water set at 5.5 before use and should be kept moist but not saturated once seeds/cuttings have been planted. Over watering can inhibit root development as well as making the plant more susceptible to root rot.