Crape myrtles are a favorite across the Dallas-Fort Worth area thanks to their vibrant summer blooms, adaptability, and long season of interest. While these trees are relatively low maintenance, a few region-specific care practices can make a meaningful difference in their health and appearance. Use the tips below to help your crape myrtles grow strong and perform their best year after year.

1. Select the Right Planting Location

Crape myrtles thrive in full sun. Choose a planting site that receives at least six hours of direct sunlight each day to encourage healthy growth and abundant blooms. Too much shade can lead to fewer flowers and leggy growth. South- and southeast-facing exposures are ideal, though not required.  

2. Manage Size Without Over-Pruning

There are hundreds of crape myrtle varieties available, ranging from compact shrubs under three feet tall to large trees exceeding 20 feet. Popular larger and mildew resistant cultivars include ‘Natchez’, Muskogee’ and ‘Tuscadora’, along with dwarf varieties such as the Black Diamond^® series. Selecting a variety suited to your space helps reduce the need for pruning and supports long-term tree health.

3. Provide Well-Draining Soil

While crape myrtles adapt to many soil types, they perform best in well-draining soil. Clay, sand, and limestone soils can all be improved by incorporating organic matter such as compost. These amendments enhance drainage and soil fertility. Crape myrtles prefer slightly acidic to neutral soils but can tolerate higher alkalinity when drainage is adequate.

4. Water Wisely

Consistent watering is essential during the first few years while the tree becomes established. After that, crape myrtles can tolerate drought, but regular deep watering during extended dry periods promotes strong root systems and overall vitality.

5. Prune for Health and Blooms

Prune only as needed in late winter or early spring. Focus on removing dead, damaged or crossing branches, improving air circulation, and maintaining proper clearance near structures or walkways. Avoid heavy pruning or a practice known as ‘topping‘, as it can weaken the tree and reduce flowering.

6. Fertilize in Moderation

Healthy soil does much of the nutrient work on its own, especially when organic matter is regularly added. If a soil test shows deficiencies, apply a balanced, slow-release fertilizer according to label directions. Avoid over-fertilizing, which can lead to excessive growth and increased pest activity.

7. Watch for Common Pests

Aphids and scale insects are the most common pests affecting crape myrtles. Routine inspections help catch issues early. Beneficial insects, such as ladybugs and lacewings, often provide effective natural control. Managing plant stress through proper watering and soil care is the first step before considering treatments.

8. Promote Disease Resistance

Powdery mildew is a common issue with crape myrtles, particularly during moist, spring weather. Healthy trees often recover on their own. Improving air circulation through selective pruning and avoiding overhead watering can help limit disease pressure.

9. Mulch for Moisture and Soil Health

Apply a layer of organic mulch around the base of the tree to conserve moisture, regulate soil temperature, and suppress weeds. As mulch breaks down, it also improves soil quality – an added benefit during North Texas summers. 

Crape myrtles are a beautiful and important part of Arlington’s urban forest. While officially the Texas State “Shrub,” crape myrtles are versatile trees that come in many sizes and varieties. We have several blogs on crape myrtles / crepe myrtles to help homeowners with multiple questions surrounding care for them.