I have noticed nematodes in my soil mix with Phragmipediums... I cannot just discard these plants. I know, that this can be large problem to solve, but perhaps somebody could help me with some advise. In Poland, there are no nematocides for hobby growers. I am looking for some professional one, but it is also hard to find something. I tired Agricolle (biological sugar), but it is not working. Please, help.