I usually have the palms on the patio through summer and in winter they are staying at the window in den dining room. So far so fine, for about four years. One month ago, the plants were still inside due to the wheater, I discovered, that most of the plants have sugery leafes. Does anybody know what I will have to do with them now. Why does this happen, and how can I get rid of it? The most concerned plant has also kind of yellow mushrooms in the soil. Your answer will be very much appreciated.