Found Rose.  

Semi-double (9-16 petals), cluster-flowered bloom form.  Once-blooming spring or summer.  

Tall.  

USDA zone 4b and warmer.  Hardy.  

I've found this in a couple towns here. It grows at least 12-15 foot tall here in semi protected areas (along garages or houses). It isn't particularly fragrant or has the most attractive blooms but its size for this part of the country is impressive. It isn't too hard to root cuttings of. It does seem to take it time to get to a decent size before it blooms much. I have also been told by the people who grow the original "mother" plant of mine that it doesn't always bloom real heavy some years (so maybe it has dieback here?) I have only had mine for a year.