Our Story

From volcanic rock to precision growing

Grodan’s story began with an unexpected discovery: stone wool, a material made from volcanic rock, could create a highly controllable environment around plant roots.

In 1969, Grodan began developing stone wool growing media for horticulture, helping growers manage water and nutrients with greater precision. Since then, Grodan has continued advancing soilless growing through growing media, root-zone technology, research and cultivation expertise.

Today, Grodan supports professional growers around the world, from food and horticultural crops to commercial cannabis cultivation, with solutions designed to improve consistency, root-zone control and resource efficiency.

See how Grodan stone wool is made

Go behind the scenes to see how naturally occurring volcanic rock is transformed into Grodan stone wool growing media for professional cultivation.