My Quick Fire Hydrangea are covered with small black flies. Some leaves are...
My Quick Fire Hydrangea are covered with small black flies. Some leaves are covered are turning yellow, then brown. I have tried bay leaves (they blow off) & net bags of mint. Neither seem to work. Do you have any suggestions.
Anoka County Minnesota
My paniculatas certainly attract flies too, esp. my Quick Fire, and to some extent, my Pink Diamond. However, that never bothered me.... they did not seem to damage the plants at all, so I just ignored them. Perhaps you have something else going on such as a fungus, there is a lot of it going around. You can apply a fungicide but the affected leaves cannot be saved only new growth.