Container size for mature Clematis.
I need to plant few Silver Moons and Clair De Lunes to grow on my shady parts of the yard for splash of color. However, the reason for the shade is big trees and thus huge root systems and competition for water. ( I cannot keep the soil moist for a long time there).
To solve the problem, I decide to plant them in containers. Now, how big a pot I need to place each clematis in for a permanent home? Is 5 gallon pots big enough to house these beauties for long time? If not how about 16" square pots?