Grodan Cubes 40 x 40

Grodan 40 x 40mm rockwool blocks are EU Ecolabel–certified stone wool propagation cubes designed for consistent moisture control and strong root development. Ideal for seed starting and cloning in hydroponic and professional horticulture systems.

Grodan 40 x 40mm Rockwool Growing Blocks – EU Ecolabel Certified

Grodan 40 x 40mm rockwool blocks, part of the ROCKWOOL Group, are a trusted and sustainable growing medium for professional horticulture. These stone wool propagation blocks have been officially awarded the EU Ecolabel, confirming their reduced environmental impact and responsible manufacturing processes.

Grodan received the EU Ecolabel in 2019 and continues to meet the strict certification standards through annual independent audits, reinforcing its commitment to sustainability and quality. As a result, Grodan remains the only eco-labelled stone wool growing media available to professional horticultural growers.

Designed for consistent water retention, excellent air-to-water balance, and uniform plant development, Grodan 40 x 40mm blocks are ideal for seed starting, cloning, and early-stage plant propagation in hydroponic and controlled growing environments.

Key Benefits:

• Size: 40 x 40mm

• EU Ecolabel certified stone wool growing media

• Made by Grodan (ROCKWOOL Group)

• Independently audited annually for sustainability

• Consistent structure for reliable root development

• Suitable for professional and advanced hobby growers

A proven, environmentally responsible choice for modern horticulture and hydroponic propagation systems