Hello, I planted 2 Physocarpus 'Satin Chocolate' shrubs about two years ago and I had no problems until now. Last fall I noticed that half the leaves did not fall and in the spring they were dried up and still clinging to the branches. I waited a bit longer and new leaves have sprouted, however the new leaves have what looks like a white powdery mold on them. I'm not sure what to do here. I don't know if it's a fungus or it will spread to my other plants. Does anyone have any suggestions? I will add some photos to this thread. The flowers are about to bloom. I would hate to throw them out. Here are some photos.
