Bad on climbers--too much treatment?
I have about 20 climbers (all different) along my picket fence. I prepared well and they looked AMAZING for the last few weeks! About 3 weeks ago I put down Bayer All in One pellets as a preventative and now three of my roses have black spot pretty badly...I'm afraid the rest aren't far behind. I went to my local nursery and they told me that I couldn't spray or use anything else until 6 weeks from when I used the Bayer...is this the case? I feel like in just going to watch all of the beautiful growth fall off! Would love to be able to do something to help.
I've already cleared all leaves from the ground and went so far as to try and remove as much as the diseased leaves as possible (a long and thankless job!)
Thank you in advance!