Grodan

Made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs Has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen...

This durable, double-sided GRODAN® Gro-Smart Tray is a perfect fit for GRODAN plugs and blocks. The tray’s 78-cell side is ideal for 1.5-inch A-OKs™ and Macroplugs™. This design...

The ideal growing media for seed starts, microgreens, baby leaf crops, and more. Thinnest Grodan available. 10 x 20 inch mats fits in most propagation trays. Consistent structure results in quick and...

New and improved stone wool substrate with advanced wetting technology from Grodan Introducing Grodan Gro-Blocks Improved, a product specifically engineered to deliver real results for your crops,...

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from...

Used by the pros to take water samples deep inside a Grodan stonewool block or slab for better pH and EC analysis. Fits any standard Luer-Lock plastic syringe.