the nursery I go to has 2 kinds of wisteria, chinese and japanese, both are about 6ft tall with no flowers. Im having trouble finding the right one for me. Does anyone know any pros and cons between the two. My goal is to eventually cover a pergola thats supported by 2 6X6 posts that are about 13ft tall. I'm also looking for which ever one blooms sooner, Ive heard they can take up to ten years to bloom. please help!!!