Okay, so a couple days ago I noticed a leaf with white mold on it on my "Parade Roses". Now, several leaves have this mold on them. I removed these leaves in hope to avoid the mold spreading.
It is sitting on a window sill with several other plants. I water it every other day to keep the soil moist and mist it occassionally (once or twice a week) for humidity. Last week, I noticed some aphids on the plant and picked them off, but I don't see any now.
What is this? Thanks a bunch, as always!