Question by  euterpe (30)

What are common crape myrtle disease's?

My crape myrtle is turning black and seems to be dying.


Answer by  worker3738 (17)

The number one crape myrtle disease is the powdery mildew. It is easily recognized by the cottoney white color that will basically take over the tree. This will twist up all the leaves and shoots of the tree and kill it slowly. This disease usually gets worse in the summer. This is the most common disease.


Answer by  walter80 (409)

The main causes of crape myrtle diseases are caused either by fungus growing on the leaves or by pests, usually flies infecting the leaves. Both causes are made worse in humid conditions. Companion planting can sometimes deter, onions are very effective if planted at the base of the tree.


Answer by  eiryck (847)

Among the common tree diseases that may infect a crape myrtle tree include molds, which is attributed to insect infestation, yellowish leaf spots and powdery mildews which are attributed to fungal infestations. This could be cured by applying fungicide and pruning of areas that are affected.


Answer by  oddflash (902)

Your problem seems to be sooty mold. It usually will go away by itself. The only other problem I can find which causes what you desribe is Aphids. You must control the Aphids even if it is sooty mold as they can kill the tree and may be present.


Answer by  naputnam (454)

Crape myrtles are prone to very few diseases, but they can be affected by pests such as aphids. It sounds like you have sooty mold on your crape myrtle. This can be controlled with several applications of insecticidal soap, such as Garden Safe brand insecticidal soap.


Answer by  hello64 (33)

Some common diseases of crape myrtle are anthracnose, which leads to lesions on leaves. If your crape myrtle is turning black it could possibly be sooty mold.


Answer by  worker8735 (40)

Powdery mildew : Most common disease. black sooty mold:Could be due to aphids dropping honeydew on the leaves Cercospora Leaf Spot:circular/irregular brown spots leaving the leaves twistedor distorted.


Answer by  BrendaG (6111)

Most diseases are pest-related, mainly, aphids and sooty mold. Control aphids with regular spray shower(add safe insecticide) and sooty mold will disappear on it's own.


Answer by  worker5020 (-2)

When pruning your crepe myrtle you have to be careful not to cause any crepe myrtle problems. What happens is if you heavily prune your crepe myrtle tree, it will cause the tree to put all their energy into growing new leaves and limbs. This means that no energy will be expended

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