This is the same bush, a few months older. In my limited experience most rose bands will put out a large, thorny (if that variety naturally has them) cane once it's settled in. The cane has always been thicker than the others, thornier, taller, , sometimes have darker leaves, and have quite a number of buds on it. If your rose bush looks otherwise healthy and normal, growth like this may not be Rose Rosette. Keep an eye on it and if you're really concerned ask an expert (they can often tell by pictures you post online). Remember, many roses' new growth starts out red, then as the growth matures it turns green.
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