Grodan supplies innovative and sustainable stone wool growing media solutions for the professional horticultural sector, based on Precision Growing principles.These solutions are, amongst others, applied for the cultivation of vegetables and flowers, such as tomatoes, cucumbers, sweet peppers, egg plants, roses and gerberas. Sustainability plays a prominent role within Grodan, from the manufacture of stone wool substrates to end-of-life solutions. Grodan is founded in 1969 and active in more than seventy countries worldwide. The head office is located in Roermond, the Netherlands.
A customer shared this in a review, "Getting little flies from these!! How to pre treat the rest of them? Indoor tent, clean environment. 2nd set of 2 cubes that I tried. Both x bugs!! I have 4" grodan blocks for these to go in to. How do i eliminate this problem? Was never expecting this kind of problem. Help!"