What Clematis is the longest flowering. Is it possible to have flowering from spring to fall by using different varieties and could you suggest the same. Thank you. Phil Zone 4
Yes, but don't know ones good for your climate. There are books and web pages just about clematis, maybe work up a list from these. Nurseries specializing in them certainly have large listings, so there is plenty to choose from on the market.
Here's a link that might be useful in choosing suitable ones for your climate: http://www.homeofclematis.net/variety.htm
