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Grodan Cube LDR 150X150X142 mm Hoe 40/40 mm
The Grodan Cube LDR 150x150x142 mm is a large rockwool growing block with a pre-formed 40/40 mm hole designed to receive a rooted propagation plug. Its optimised fibre structure ensures uniform distribution of moisture and nutrients throughout the block. The logical next step after the propagation stage. Order at Plant & Flower.
Grodan Cube LDR 150x150x142 mm – large rockwool block for root development
Once your cuttings have rooted in a propagation tray, they need room to grow. The Grodan Cube LDR 150x150x142 mm provides that space: a substantial rockwool block with a 40/40 mm hole sized for standard propagation plugs. Explore our full substrate range in the cloning and propagation category.
Seamless transition from plug to block
Rooted plugs from a Grodan 77 Plugs tray slot directly into the hole of this block. Roots grow out of the plug and colonise the larger volume of rockwool, gaining access to more water and nutrients. This gradual step-up reduces transplant stress and promotes vigorous growth.
Uniform WC and EC distribution
The fibre structure is engineered to distribute water content and electrical conductivity evenly across the full block height. No dry spots near the top, no waterlogging at the base. This precision makes the LDR block ideal for drip irrigation setups where consistent feeding matters.
Choose the right block size
At 15x15x14.2 cm, this block suits plants that need a generous root volume. For smaller plants or an intermediate growth stage, the Grodan Cube LDR 100x100x65 mm delivers the same quality in a more compact format.
Order the Grodan Cube LDR 150x150x142 mm at Plant & Flower — fast shipping across Belgium.
Which propagation plugs fit the 40/40 mm hole in this Grodan block?
The 40/40 mm hole is designed for standard Grodan propagation plugs and similarly sized cubes. Rooted plugs from Grodan propagation trays fit directly into the hole. Ensure the plug sits snugly for good root-to-block contact.
Can I use the Grodan LDR 150 block in a hydroponic drip system?
Yes, Grodan rockwool blocks are specifically designed for drip irrigation. The fibre structure distributes water and nutrients evenly throughout the block. Make sure to provide adequate drainage underneath to prevent water from pooling.
What is the difference between the Grodan LDR 150 and the LDR 100 block?
The main differences are size and hole diameter. The LDR 150 measures 15x15x14.2 cm with a 40/40 mm hole, offering more root volume for larger plants. The LDR 100 is 10x10x6.5 cm with a 27/35 mm hole, suited for smaller plants or intermediate stages.
