This is actually two bushes planted a few feet apart. The canes are probably 6-8 foot tall but the longer canes in the middle that stretch up and haven't arched over yet are closer to 10 foot long. I think this might make a nice climber, the canes are flexible and nearly thornless (thorns are only at the base of the canes).
This photo is of the "mother" plant that I first found (it isn't the one that I grow on my own property but rather posted to be a mature plant photo).
From "Hortus Nitidissimis", 1786, Vol. III, Sect. 12, pl. 154, untitled, but possibly rosa provincialis prolifera
With the permission of the Trustees of the Royal Botanic Garden, Kew.
