And if you want to grow a clematis up a tree or shrub, decide whether you want it to flower at a different time to the host, to extend the season of interest or to bloom at the same time for ...
Yes, many Clematis varieties are listed as zones 4-9 but many zone 4 cultivors grow well here, especially those that flower on new wood since buds that must overwinter can easily freeze.
Clematis are fabulous plants for providing vertical colour on walls, fences, ornamental obelisks and through the branches of trees and shrubs. For the best display you'll need to know when to prune.