RKatzin
Omono
Could be the effect of the powdery mildew also and as you say it is fall. I would clip remove all leaf and debris and watch them in the spring to make sure you have good ventilation.
It is good to check your surrounding area to see if the mildew is coming to you from another source. I had alot of blackberry brier around and had alot of mildew until I remove it to the property line, which also increase my ventilation flow.
It is good to check your surrounding area to see if the mildew is coming to you from another source. I had alot of blackberry brier around and had alot of mildew until I remove it to the property line, which also increase my ventilation flow.