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Grodan Rockwool

Grodan’s range of rockwool cubes and slabs are trusted by growers across the globe. They are the world’s leading rockwool manufacturer and have been developing rockwool products since the 1960’s, supplying growers in over 60 countries.

Grodan now hold both the prestigious KIWA Dutch quality award and the European Eco Label award, so you can be assured of exceptional quality in every batch. Don’t risk your yields by growing with a poor substitute.

Nutriculture only recommend Grodan: the premier rockwool brand.

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.

Danish Grodan and Dutch Grodan

To offer you the maximum level of choice, Nutriculture stock both Danish and Dutch Grodan rockwool. Historically, Danish Grodan has been of a slightly higher quality – hence the marginally higher price – although in everyday use there is little difference.

The main difference between Danish and Dutch Grodan are as follows;

• Danish Delta 4G and 6.5G Cubes have a slightly larger hole than the Dutch version, in order to accommodate the MM propagation cube.
• Danish 25/150 and 36/77 SBS propagation cubes have a smaller hole than the Dutch version, in which to place the seed or cutting.

Propagation Cubes

	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 rootbound they can be transplanted to a larger cube or pot of growing medium. 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. Click to enlarge image
	AO Propagator Refill Cubes Refill for Dutch Grodan SBS trays. Box of AO25 contains 6000 cubes, box of AO36 contains 2940 cubes. Click to enlarge image
	Wrapped MM Propagation Cubes Grodan propagation cubes wrapped in plastic on all four sides to reduce evaporation and root cooling. Available in two sizes. Box of 40/40 contains 2250 cubes, box of 40/50 contains 1440 cubes. Click to enlarge image

Delta Cubes

Once seeds or cuttings are rooted in a propagation cube, transplant them to a Grodan Delta cube. 3” and 4” cubes are ideal for use in NFT, slab culture, dripper or Ebb & Flood systems. 6” Hugo cube can be used for deep Ebb & Flood tables or passive pot culture.

Remove the plastic sleeve before transplanting into a Nutriculture hydro system for increased oxygen to the root zone and accelerated growth.

	3" Small hole Cubes Delta 4G 27/40 and 27/35 are compatible with SBS 25/150 propagation cubes. Box contains 384 cubes.   Click to enlarge image
	3" large hole cubes Delta 4G 42/40 and 40/35 are compatible with SBS 36/77 propagation cubes. Box contains 384 cubes. Click to enlarge image
	3" Deep cubes Delta 5.6G 42/40 is compatible with SBS 36/77 propagation cubes. Box contains 256 cubes. Click to enlarge image
	4" small hole cubes Delta 6.5G 27/40 and 27/35 are compatible with SBS 25/150 propagation cubes. Box contains 216 cubes. Click to enlarge image
	4" large hole cubes Delta 6.5G 42/40 and 40/35 are compatible with SBS 36/77 propagation cubes. Box contains 216 cubes. Click to enlarge image
	hugo blocks Grodan’s answer to the pot. Ideal for deep Ebb & Flood tables, drip irrigation or hand watering in a pot. Compatible with SBS 36/77 propagation cubes. Box contains 48 cubes. Click to enlarge image

Next Generation Slabs

Grodan’s next generation slabs offer stability over water content and EC (CF), improved re-wetting and rapid root development. The ultimate slabs for drip irrigation. Place plants that are rootbound in Grodan Delta cubes onto the slabs and insert drippers into the cubes.

	vital slabs The most popular slab for the hobby grower, Vital offers value and proven reliability. Predominantly vertical fibre structure promotes rapid rooting and vigorous vegetative growth. Click to enlarge image
	gro-top master slabs The premier growing slab for drip irrigation. Unique twin-layer structure; with a firmer top layer for even distribution of moisture across the depth of the slab. Click to enlarge image
	dutch slabs Quality slabs for drip irrigation on a smaller budget. Click to enlarge image

Grow Cubes

grodan grow cubes 1cm square cubes of Grodan rockwool, Clean, lightweight and well aerated. Ideal for passive growing in pots or use in the Wilma system. Mix with clay for a well aerated, free draining hydroponic growing medium. Click to enlarge image

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