Answer: Based on your description it sounds like the plant is suffering from a fungal infection, possibly mildew. It is difficult to make a diagnosis however without knowning what plant it is. In general, the best ways to deal with this are: avoid wetting the foliage, increase air circulation, remove infected leaves early to avoid reinfection, dispose of any fallen infected leaves, and if needed, treat with an appropriate product labeled for use on that particular plant. Your county extension (461-1000) should be able to help you identify the plant, the specific cause of the problem, and suggest what to do or use. I'm sorry about your plant.
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