Have I missed it? Did you include the zone in the article about the Heptacodium tree? Zone is very important to those of us who live in areas challenged by fluctuating weather, and so often it isn't included in the description.
You're right, oregonrose, I didn't include zone information in the body of my article. That information appears in a link at the end of the article. Here it is: http://davesgarden.com/guides/pf/go/2036/. Best--Larry☼