Grodan supplies cultivation solutions that comprise a combination of advice, support and a clean and controllable substrate. This results in the best basis for the cultivation of safe, healthy and high-quality vegetables and plants. For over fourty years, Grodan has been at the cutting edge in the cultivation of safe, healthy and high-quality vegetables and plants. Their A-OK starter cubes are the most widely used media for starting clones. Their rockwool growing slabs are primarily used by commercial tomato, cucumber and pepper farmers, but their Delta series of rockwool blocks are very popular among growers of all sizes.