Thanks everyone.
I'll opt for Seil and Jeri's suggestion. I think I tried this before with this
rose...but, I chickened out and wasn't brutal enough. In the spring, I'll
toss back a shot of bourbon and get out my sharp clippers (and my little
saw) and cut the whole plant down to about 1.5 or 2 feet. I guess I'll scratch
in some lovely bone meal and cover the patient with a blanket of
double-cut mulch from the NYC Parks Department. David