Hi Tim - I grew this plant from T & M seeds a couple of years ago. Mine grew on a 4 foot trellis, not nearly as aggressive as yours. But my vines were in bloom from mid-summer on....LOADED with those interesting snail-flowers. I can't imagine why yours hasn't bloomed yet. I have found that calling T&M and asking for a horticulturist puts you with a knowledgeable person who is happy to answer questions. Maybe they can help. Sonnie