How to save this rose?
Help! I left a month ago with healthy roses both in ground and in containers with an able housesitter to care for them.
I came back to all but one healthy and thriving. Can anyone tell me what's happened to it's leaves? I'm pretty sure it's not black spot but I can't find pics anywhere that look just like what's happening to the leaves. Also there's only one scraggly bud on what used to be a flourishing bush.
Pics I've uploaded are closeups of the leaves of the blighted bush located on the north side of the house (plenty of sun) and the same (thriving) rose in another container on the south side of the house. Both have been planted and treated in the same manner, have been in their containers for two years and have been my most consistent performers, providing lots and lots of blooms.
Note it has been the rainiest summer on record in NC and continues to rain almost daily! Temps are also way below normal 65 today (Aug 17)!!!!
I'd appreciate insight and suggestions for treatment.