Grodan
About Grodan
Grodan is a Dutch company and the world's leading manufacturer of stone wool (rockwool) growing media for horticulture, including cannabis cultivation. Part of the ROCKWOOL Group, Grodan's substrates are used in commercial cannabis operations worldwide for their precision water and nutrient management capabilities.
Key Facts
- 1World leader in stone wool growing media, part of the ROCKWOOL Group (listed on Copenhagen exchange)
- 2Grodan substrates are used in the majority of large-scale commercial cannabis grows using rockwool
- 3GroSens sensors enable precision water content and EC monitoring in the root zone
- 4Founded in the Netherlands in 1969, decades of Dutch horticultural expertise
Frequently Asked Questions
Why is rockwool popular for cannabis growing?
Rockwool (stone wool) offers precise control over water and nutrient delivery to cannabis roots. It is sterile, pH-neutral when treated, reusable in some cases, and allows growers to precisely manage the root zone environment — critical for maximizing cannabis yields and quality.
Is Grodan publicly traded?
Grodan itself is not separately traded, but its parent company ROCKWOOL Group is publicly listed on the Copenhagen Stock Exchange. ROCKWOOL is primarily known for building insulation but Grodan is its horticultural division.
Cannabis Laws
Products
- Rockwool growing cubes
- Rockwool slabs
- Propagation plugs
- Grodan Delta blocks
- Grotop Master slabs
- GroSens sensors
Specialties
Company Details
- Location
- Roermond, Netherlands
- Founded
- 1969
- Publicly Traded
- No