Crape myrtles (Lagerstroemia indica) are essentially trouble-free small trees. The most common problems include powdery mildew, Cercospora leaf spot, aphids, Japanese beetles and sooty mold..
Similarly, it is asked, how do you know when a crepe myrtle is dying?
How To Tell If You Have A Dead Crape Myrtle. One way to check is to use your fingernail and scratch off a small section of bark. You should see some green just under the surface. If you do, this means the tree is still alive.
Also Know, what kills crepe myrtle? Glyphosate kills virtually any plant it touches. Herbicides containing glyphosate may be painted on freshly cut stumps or sprayed onto the foliage to kill the crape myrtle. Trim the cut end of older stumps to expose the wood surface before applying glosphate. Spray the foliage and branches of intact crape myrtles.
Simply so, how do you treat crepe myrtle fungus?
Control: On small plants, wipe or wash off the molds with a small sponge and water. On large trees, use a hose-end sprayer to wash off mold. Spray plants with malathion, horticultural oil, azadirachtin (Neem), or acephate (Orthene) to control insects that secrete honeydew.
Why would a crepe myrtle die?
The most likely answer is cold damage. I had noticed last summer that the plant didn't look as healthy as it had in previous years. When temperatures drop below 10 degrees for any length of time, crape myrtle tends to die back down to the ground.
Related Question Answers
Should you deadhead crape myrtle trees?
Cut off spent crape myrtle blossoms by late July to encourage flowering again. Deadheading crape myrtles (removing dead or dying flowers) encourages new sprouts and blooms, but if you deadhead too late in the season, the tender new growth that is produced can be damaged by cold weather.Why did my crepe myrtle not bloom this year?
The number one most common reason Crepe Myrtles fail to bloom is improper pruning techniques (or a lack of pruning altogether). Crepe Myrtles bloom on the current season's growth. If they are pruned too late, all the new wood is removed and the flower buds never develop.Does crape myrtle grow back?
Since the deciduous trees bloom on new wood, they are often cut back severely each year with the goal of more new wood, for more blooms. While a crepe myrtle does grow back, even from being cut to the ground, less is more when it comes to pruning this summer stalwart.Should crepe myrtles be pruned every year?
blooms. Only the new growth each year is what produces those lovely blooms that you admire each spring and summer. So with that being said, it pays to prune your Crape Myrtles in the winter months as soon as November at as late at March when they are dormant.How do I make my crepe myrtle bloom?
Late Pruning: This is by far the most common reason for crape myrtle blooming problems. Crape myrtles should be pruned either after they finish blooming, or in very early spring before they sprout. Don't prune them once they've started growing in spring, because those new shoots give rise to this year's blooms.Can you prune a crepe myrtle in the summer?
Summer. June signals the start of crape myrtle's blooming season, although it may begin a few weeks before or after the start of summer. The only pruning you should do at this time is to remove branches for the health of the shrub.When should crepe myrtles be cut back?
Late winter (right now) is the best time to prune a crepe myrtle, because it's leafless and you can easily see all of the branches. It also blooms on new growth, so pruning now won't reduce blooming. In fact, it may increase it.What happens if I don't prune my crepe myrtle?
Flowers are not the only virtue of this tree. Many varieties have beautiful bark and growth habits that can be enjoyed all year if trees are not heavily pruned. This unsightly, ugly pruning known as crape murder is not recommended. Once it's done, it ruins the tree's graceful natural shape for the rest of its life.Can you overwater a crape myrtle?
Poor drainage or overwatering can lead to root drowning. As the condition persists, the bark of the roots softens and separates from this inner area, and leaves on the crape myrtle's canopy fade or yellow and begin to wilt. Drowning stresses the plant and may eventually kill the crape myrtle.What is the lifespan of a crepe myrtle tree?
Crepe myrtles live quite a few years if you take care of them. A crepe myrtle lifespan can exceed 50 years. So that's the answer to the question “how long do crepe myrtle trees live?” They can live a good, long time with suitable care.Is Epsom salt good for crepe myrtles?
Crape Myrtles bloom with a dose of Epsom Salts. ANSWER: There are two things to bear in mind. One: If you fertilize with a heavy nitrogen you will produce foliage but no blooms. I would try the Epsom Salts now and perhaps nip back the tips of the tree or even trim if it needs shaping.Is there a difference between a crepe myrtle bush and tree?
What's the difference between a crape myrtle tree and a crape myrtle bush? The only difference is the mature size. See also our Crape Myrtles Plant Care and Collection of Varieties.How much water does a crape myrtle tree need?
Water RequirementsCrepe myrtle likes a medium amount of water and prefers consistently moist soils where it can get it. However, once established, it is quite drought-tolerant and will subsist on a deep watering -- to a depth of 6 inches or so -- once or twice per month.Why are the leaves falling off my crepe myrtles?
Sap-sucking insects -- such as aphids -- feed on the vital juice coursing through the crape myrtles leaves. Their feeding results in stunted growth and wilted leaves that drop from plant prematurely. Alternatively, introduce ladybugs, lacewings and other predatory insects that will feed on the sap-sucking pests.What do crepe myrtle leaves look like?
Leaves, Bark and BranchesMost crape myrtles have dark green leaves, some tinged with red upon opening. The leaves on a few varieties turn dark red, yellow or orange-red in the fall. In the winter, the branches become smooth again and their gnarled, curving forms are revealed.Why do crepe myrtles turn yellow?
Assuming good drainage, watering it well will often help move the toxins out of the area. Other cultural problems that cause yellow leaves on a crepe myrtle include inadequate sunshine and too little water. If the soil doesn't drain well, it can also result in crepe myrtle with yellow leaves.What causes fungus on crape myrtles?
Powdery Mildew: Powdery mildew is one of the most common problems of crape myrtle, and it is caused by the fungus Erysiphe lagerstroemia. Once these sprouts become infected, the fungus easily spreads to the upper portions of the plant.Does powdery mildew kill crape myrtle?
New, fast-growing leaves pucker and become distorted. They may even die. Flower buds covered with mildew fail to open. Powdery mildew won't kill your crepe myrtle.What is the white stuff on the branches of my crepe myrtle?
One problem that is often seen on crape myrtles is a disease called powdery mildew. Powdery mildew is a disease that is common on many ornamental trees and shrubs, including crape myrtles. Powdery mildew is a powdery white to light gray-colored fungus that will grow on succulent stems, leaves, buds, and flowers. 
Emma Jordan 
