Even more disheartening, one of my miniature rosebushes is deader than a doornail, and the other one is hanging on by a thread. Once thriving and blooming without dead stems (the miniature rose bushes don't seem to be affected like the others), this phenomena occured two days after using Bayer Advanced All-In-One Rose and Flower Care.
This product promises insect and disease control and fertilization for six weeks. Sound too good to be true. I've used this on my other rose bushes in the past (I know, there seems to be a trend developing), and other flowering bushes which are doing quite well. So what's the problem? As Paul James would say, I'm stumped. On the bright side, my roses are free of insects, although they do suffer from black spot. One out the three, hmmmmm. Way to go Bayer!
I'm considering drastically pruning the roses back and essentially starting over. Not the best idea during the growing season, but I'm sick of looking at anorexic rose bushes after all the time and money I put into them. Perhaps I'll also e-mail bomb the Department of Entomology and Plant Pathology at Auburn University until they decide to assist me.