(aka: Clematis 'Roguchi') Virtually anyone who has grown Clematis 'Rooguchi' agrees this hybrid, from breeder Kazushige Ozawa-sani of Japan, is one of the finest bell-shaped clematis ever introduced. Starting in early May and continuing through September, this free-flowering Clematis integrifolia x durandii hybrid is covered with large, 2", cobalt blue bells...a hummingbird treat. Clematis 'Rooguchi' has an amazing range, growing equally as well in Minnesota as it does in Houston, Texas. Don't worry about pruning, since it is a perennial and will die to the ground each season. For us, Clematis 'Rooguchi' makes a 6' tall clambering vine...perfect for weaving through shrubs like a motorbike through a traffic jam.