It will soon, but only for the ones that I carry. Unfortunately, COTW doesn't list the USDA zones for the clematis. The only reliable comprehensive source I've found with the USDA zones is Edith's over at ACS, but she's missing the newest cultivars. Hybrid clematis cultivars haven't been easily found in commerce for very long here in the U.S. Compared to how long roses and other plants have been popular in the U.S., we're practically pioneers with the hybrids, in plant terms!
I'll keep looking around for a free source for the USDA zones and post if I find one. In the meantime, if you want to check on one in particular, just post it here and I'll look it up for you.
