It’s way to full to do each leaf with any soap solution. However, if you don't happen to have a large supply of Lady Bugs on hand, you can spray your Crape Myrtle with over the counter diazinon or malathion, available at most home improvement stores. Blasts of water from the hose also helps keep populations down. Crape myrtle (Lagerstroemia ssp.) Crape myrtle aphids are tiny, only about a 16th of an inch long. The mold doesn't feed on the foliage. I’m so bummed. Note that if it’s the trunks instead of the leaves that are covered in sooty mold, it’s probably crapemyrtle bark scale insects rather than aphids that are causing the problem. Branches and trunks can be covered in the white scale infestation. Dogwood Trees . Crepe Myrtles Are Covered With Sticky Residue And White Powdery Substance. Aphids are bothersome little insects that eat Crape Myrtle leaves. Crape Myrtle Aphids are one of the main causes of honeydew and sooty mood on Crape Myrtle trees. It is of Asian origin, like the crape myrtle tree itself. Fortunately, the common Lady Bug can eat up to 1,000 of these little critters a day! Found throughout May through September, these tiny insects do damage by feeding on the soft tissues and plant sap of Crepe Myrtle leaves. Crape Myrtle aphids have many natural enemies, like lady beetles and their larvae, green lacewings and their larvae, hover fly maggots, parasitic wasps and certain types of fungi. entnemdept.ufl.edu/creatures/orn/trees/crapemyrtle_aphid.htm Another striking symptom is the extensive amount of black sooty mold that may completely cover the foliage, branches, and trunks. The new ones are about ten feet tall, the older ones are about 12 to 14 feet tall. If you see natural enemies on your Crape Myrtle, you may be able to skip spraying it with pesticide. Is this from aphids? (Note to reader: This is seldom a good idea.) The crape myrtle aphid attacks only crape myrtles. Flowering Cherry Trees . I planted 8 about 9 years ago, then realized four years later that I needed three more. Crepe myrtle aphids reproduce rapidly, especially as the weather gets hotter. ... United States . Very beautiful. Q: crape myrtles are cover with a sticking residue. Somewhat slow growing for a crepe myrtle. Black Residue on Crape Myrtle Trees. Easily started from softwood cuttings. Flowering Pear Trees ... completely covered in aphids. If so, should I just spray as I do my roses? I’ll address these next week. The leaves are shiny and sticky. Instead, it grows on sticky honeydew secreted by sucking insects like aphids, scales, and white flies that do feed on the leaves. It’s so bad I just want to burn it down but because it’s one of the earlier breeds, I can bring myself to do it. However, do not confuse the honeydew and resulting black sooty mold caused by an aphid infestation with that caused by the crapemyrtle bark scale. 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