There are problems in the greenhouse though and this year I am continuing my fight with white flies and spider mites. I won't use anything toxic and have found that one of the best ways to keep them under control is to spray my plants everyday with water. It does not get rid of them but slows them down. Sometimes I add soap to spry them with. I had read that they hate sea weed so have also been spraying the leaves with that. The water is the easiest though, I can soak them all in much less time with the hose.