Thanks so much for the reply, Tiffany! Very good information there... I didn't realize I could grow it as a tree as you describe, for one thing. Do you think this thing will grow that fast ("try to keep it from reaching the roof for the first couple of years") up here in the north? That's something else I really hadn't envisioned -- but I'd be really happy if it's that vigorous! This particular arbor is made of cedar, so it shouldn't rot (at least not for a long time) and should just 'weather' to a natural gray color; I've been planning to construct something similar, although perhaps slightly wider, and would likely use cedar for that as well. I think I'll take a little ride and check this thing out in person, maybe that will help me make up my mind... and a visit to a garden center would be therapeutic, after having a couple of inches of snowfall yesterday! Thanks again for your help
