Started a rose from a cutting this Spring. Has grown into a small bush approximately 1 ' tall and very healthy until a few months ago. It now is covered with a fine webbing, powdery leaves, and leaves turning yellow and dropping off. I had it on a balcony but brought in when weather turned extremely cold. Any thoughts would be greatly appreciated.
Lane County Oregon roses
Thank you for your question. I suspect your plant has spider mites, which leave the fine webbing on the plant. Here is an article on them (and other rose plant insects) with some control suggestions: http://ipm.ucanr.edu/PMG/PESTNOTES/pn7466.html
I hope this is helpful. Good luck!