Showing some of the black thorns and a few leaflets with a yellowing along the edges. North Carolina, September 2009. [Edit: At that time, I was wondering whether the rose wasn't coming down with the first symptoms of Rose Rosette Disease; the fact that some canes had black thorns for the first time ever, and other canes had no black thorns seemed strange to me, as well as a sudden increase in the numbers of thorns on many stems. Rose Rosette Disease was confirmed by early April of 2010 with classic red ultra-leafy rosettes and reddening canes, but oddly enough, none of the thorns were black by the spring.]
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Showing some of the black thorns and a few leaflets with a yellowing along the edges. North Carolina, September 2009. [Edit: At that time, I was wondering whether the rose wasn't coming down with the first symptoms of Rose Rosette Disease; the fact that some canes had black thorns for the first time ever, and other canes had no black thorns seemed strange to me, as well as a sudden increase in the numbers of thorns on many stems. Rose Rosette Disease was confirmed by early April of 2010 with classic red ultra-leafy rosettes and reddening canes, but oddly enough, none of the thorns were black by the spring.]