Thank you, Zuzu.
Do you consider a one gallon can a large root mass ? If I can't get a plant with a large root mass, do I have to pot it up gradually to allow the plant to develop a larger root mass ?
I noticed on many of the nursery sites that clematis should be sited in partial shade. I don't have any partial shade in the gardening area. Is that a problem ?
I liked seeing that they start blooming in June. That's the month when I am dis-budding all of the roses for the curculios.