Asked November 16, 2024, 10:43 AM EST
Greetings - I hope you can help. My rose bush is a baby from 175yr old bush. It’s been in my garden for 5yrs. I spray it 2 times per year with Bayer 3-in-1 insect, disease, & mite control. This summer after a full bloom, I saw little string/webs, esp on new growth. The leaves turned red with brittle edges (summer not fall). I sprayed again with 3-in-1 (bottle is about 6 years old, maybe expired?). Rose did not significantly improve. I sprayed Neem oil - no change. Sprayed 3-in-1 again. The entire bush is affected.
Since the weather turned, I see one sprig of healthy-looking new growth. Does this support my mite/insect theory?
* I think my blueberry & serviceberry bushes may also have the same pest/problem.
- Is there anything I can do this fall to help eradicate the problem?
- Should I dramatically cut back my rose this fall? (currently 5ft tall & 4.5ft wide).
- I usually do some minor pruning in spring & fall but no special preparation for winter.
- What should I do in the spring?
Thank you!
Kent County Michigan