Crepe Myrtle Tree Care in Atlanta

Atlanta's Most Popular Flowering Tree

The Crepe Myrtle (Lagerstroemia indica) is unquestionably the most widely planted flowering tree in metro Atlanta. From July through September, crepe myrtles explode in vibrant blooms of white, pink, red, lavender, and purple, providing color during the hottest months when few other trees are flowering. Their attractive exfoliating bark, compact size, and exceptional heat tolerance make them perfectly suited to Atlanta's climate and landscape needs.

Crepe myrtles are available in sizes ranging from dwarf varieties under 4 feet to large tree forms reaching 30 feet or more. For Atlanta landscapes, tree-form varieties like Natchez (white), Tuscarora (coral pink), Muskogee (lavender), and Dynamite (red) provide excellent summer color, attractive bark, and moderate shade. With proper care from an ISA-certified arborist, crepe myrtles can thrive for decades in Atlanta's urban and suburban landscapes.

Identifying a Crepe Myrtle

Crepe myrtles are easily recognized by their smooth, exfoliating bark that peels away in patches to reveal shades of pink, gray, tan, and cinnamon underneath. This multi-colored bark display is attractive year-round. The leaves are small, opposite or sub-opposite, oval, 1 to 3 inches long, and emerge with a bronze or reddish tinge before turning dark green. Fall color ranges from yellow and orange to bright red, depending on the variety.

The flowers appear in large panicles at the ends of new growth from midsummer through fall. Each individual flower has crinkled, crepe-paper-like petals, which gives the tree its common name. The flower clusters can be 6 to 18 inches long, creating a dramatic display. After flowering, persistent brown seed capsules remain through winter.

Growing Conditions in Atlanta

Crepe myrtles thrive in Atlanta's hot summers and tolerate the region's clay soils better than most ornamental trees. They require full sun for best flowering; trees in partial shade bloom sparsely and are more susceptible to powdery mildew. They prefer well-drained soil but are adaptable to a wide range of soil types common across metro Atlanta.

Once established, crepe myrtles are remarkably drought-tolerant, making them excellent low-maintenance landscape trees for Atlanta. However, newly planted trees should be watered regularly for the first two growing seasons to establish a strong root system.

Common Problems and Diseases

Crepe Myrtle Bark Scale (CMBS) is the most serious emerging pest threat to crepe myrtles in Atlanta. This invasive insect, first detected in the Southeast around 2014, has spread rapidly across Georgia. CMBS appears as white, felt-like patches on bark, particularly in branch crotches. Heavy infestations produce copious honeydew that leads to thick black sooty mold on bark, leaves, and anything beneath the tree. A comprehensive plant health care program including systemic insecticide treatments is the most effective control strategy.

Powdery Mildew is a fungal disease that creates a white, powdery coating on leaves, buds, and young shoots. It is most common during periods of high humidity with warm days and cool nights. Planting mildew-resistant varieties and ensuring good air circulation are the best prevention strategies.

Sooty Mold is a secondary problem caused by honeydew excretions from aphids, bark scale, or other sap-sucking insects. The black, sooty coating on leaves and bark is unsightly but does not directly harm the tree. Controlling the underlying insect problem eliminates sooty mold.

Improper Pruning ("Crepe Murder") is arguably the most common and entirely preventable problem affecting crepe myrtles in Atlanta. Each winter, countless crepe myrtles are topped by cutting all branches back to stubs. This severe heading produces a proliferation of weak, whip-like sprouts, ruins the tree's natural form, and creates permanent disfigurement. Proper crepe myrtle pruning involves selective removal of small branches and seed heads, not topping.

Care and Maintenance

The most important maintenance practice for crepe myrtles is proper pruning. In late winter, remove suckers from the base, small twiggy growth on the interior, crossing branches, and old seed heads. Remove lower branches to expose the attractive bark on multi-stemmed specimens. Never top a crepe myrtle. If a crepe myrtle is too large for its space, it should be replaced with a more appropriately sized variety.

Fertilize in early spring with a balanced, slow-release fertilizer. Apply 2 to 3 inches of mulch around the root zone. Monitor regularly for bark scale, especially from spring through fall. Treat bark scale infestations promptly before they become established and spread to neighboring trees.

When to Call an Arborist

Contact an ISA-certified arborist if you notice white waxy deposits on bark, excessive sooty mold, significant dieback, or if your crepe myrtle has been improperly topped and needs corrective pruning. EastLake Tree Services specializes in proper crepe myrtle care and can help restore trees that have been damaged by incorrect pruning.

Atlanta-Specific Tips

Choose mildew-resistant and bark scale-resistant varieties when planting new crepe myrtles in Atlanta. The newer hybrid varieties from the National Arboretum generally have the best disease resistance. Plant in the sunniest available location to maximize flowering and minimize disease. In Atlanta's clay soils, amend the planting area for improved drainage. If you see bark scale on your trees, contact an arborist promptly as this pest spreads quickly through neighborhoods.