My Bourbon rose, Souvenir de St. Anne has been doing well up until a few weeks ago when her bottom leaves started turning yellow and coming off at a slight touch. At first, I thought...black spot, but, there's been no sign of it. All the bottom leaves are gone and the stems are healthy green as are the upper leaves. I gave it a feeding of fish emulsion, 5 1 1, thinking maybe it needed more nitrogen. I also sprayed it twice during the week with Bonide Copper Fungicide. I haven't seen anymore yellow leaves in the last few days, but, I'm worried about this plant. Since it's been planted I've been giving it fish emulsion every two weeks and once gave it Kellogs Organic fish and kelp which is 2 2 2.
What concerned me was how easy the yellowing leaves came off at the tiniest touch, but, no sign of disease that I can see. Just planted in early May and I don't want to lose it because I'm not doing the right things for it.
Any ideas, please?
