The Q&A Archives: Abutillon

Question: My abutillons are having black spots on the leaves. I am spraying some fungicide. About 3 weeks ago I found some white bugs in the soil and saturated the soil with diazinon solution twice one week apart. Now I am finding these spots. Is there any connection? <br><br><br>thanks<br><br>mohan<br>

Answer: Your flowering maple plants are not usually bothered by pests, except maybe mealy bugs and aphids. Mealy bugs look like white, cottony masses on the stems of the plant. Aphids, of course, come in several colors and generally attack flower buds and newly opening leaves. The insects in your soil may have been fungus gnats. Using diazinon, even in a dilute solution, on tender plants may very well cause some problems. Abutillon prefers cool temperatures in the winter (50F - 60F degrees), bright light - even a few hours of direct sunlight, very little water in the winter, but mist the leaves occasionally. Spots on the leaves can be caused by overwatering, underwatering, watering with cold water with splashing on the leaves, too much sun, anthracnose, sooty mold, oedema (corky scab), or just plain bacterial/fungal leaf spot. Instead of spraying more chemicals on your plant, try to adjust the environment to make it happier, and pick off the leaves that are showing symptoms. Then let your plant recover on its own. Good luck!

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