I have a large hanging fuschia, and today I noticed that several of the leaves are turning yellow with greenish/grayish flat spots. At first I thought it was powdery mildew, but I'm questioning that because the spots are flat. I've only had the plant for about six weeks; I live on Bainbridge Island, WA (USDA 8b); the plant gets sun til about 1:00 pm, although the daytime temps are only in the 60's or 70's, so it's not a hot sun; and I water it when my knuckle comes out of the soil just barely moist. My guess is that it's a disease rather than the environment, but I can't say.
I'd like to ask whether anyone has any ideas about what the problem might be.
Thanks!
Thanks!