Grodan SBS Cubes


Ideal for seed or cutting propagation, the SBS (Single Block System) are supplied in their own handy plastic tray for easy handling. Once young plants are well rooted they can be transplanted to a larger cube or pot of growing medium.

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Available in two sizes 1” (25/150) and 1.5” (36/77), they are compatible with all Grodan Delta Cubes. Box of 25/150 contains 2700 cubes, box of 36/77 contains 1386 cubes.

The benefits of Grodan rockwool

  • Completely sterile and inert – ideal hydroponic growing medium. Reduced risk of pests and disease
  • Even root growth – predominantly vertical fibre structure means identical levels of resistance for each root, so roots grow evenly
  • Increased root development – structure of the rockwool is designed for optimum air / water balance and accelerated rooting
  • Uniformity – quality and structure is uniform, so water content and EC (CF) will remain the same for every plant
  • Re-wetting – Grodan rockwool is easy to re-saturate if it dries out, reducing the risk of root damage
  • Nutriculture are Grodan’s master distributor in the UK