My Caramella grew to 6' the first year, and bloomed pretty much nonstop. I thought it was supposed to be a small shrub, so I placed it in front of a bed of small hostas. oops. I left it there, though, because it was so beautiful that it deserved to be front and center.
Today I uncovered my Cecil Brunner, and took a closer look. Sure enough, all but 2 of the canes are thornless, but there are 2 that have thorns here and there! Other than the random prickles, the cane looks just like all the others on the plant. It isn't coming from any deeper, and I don't think my plant is grafted anyway.
My Crown Princess Margareta grows this way also. The majority of the canes have no thorns, and a few have big thorns widely spaced. Other people told me it must have been mislabeled, but everything about it is exactly as it should be. To me, it has a wonderful scent, yet other people say their Crown P. M. has no scent. I wonder if mine is a sport?
This year, I will pay attention to the blossoms on the thornless canes and compare their scent to those on the thorned canes.