oosterholt, I'm sorry I don't know where you could get seeds in Europe, but if you try Mesa Gardens in the U.S. in a search engine, perhaps they would send to you, if they do them. I know Chiltern Seeds in Cumbria, England, used to sell them, but not over the last years, as far as I know. Do you want them because you like sowing seeds? Because I think it takes a long time for them to grow, and they wouldn't perhaps be unusual in foliage, perhaps just green. Or is it the specii you are interested in? If you are a beginner, like me, perhaps trading for offsets or buying them might be a better idea. I know of a nursery if you are interested, in England.

Thanks, Marguerite, I will try Mesa Gardens.