I've been reading through a gazillion posts on wisteria and haven't quite found what I was looking for.

I have a 2 part question. Which reputable online companies sell the most mature, highest quality wisteria (I don't have 20 years to wait for a seedling to bloom, haha).

Secondly, I"m in Dallas and we have several Calloway's nurseries around here; about what time do nurseries around here carry wisterias?

Thanks a bunch and love the pics I've seen people post over the years.

PS. I don't care if its invasive, it will be in a big pot on a big round concrete slab so I don't have to worry about runners in the ground.