Hi, this past spring I saw this plant growing right against the fence
between my neighbour's yard and mine. I was going to cut it down, but
I was curious as to what it is. It is just now starting to flower, and
the blooms sure are pretty. Can anyone ID this plant? Area is southern
Ontario Canada, Thank you very much in advance.

Denny

http://home.ca.inter.net/~deniswb/nice_flower.jpg