Southern Belle to Mountain Gem: Crape Myrtles Brighten Prescott Gardens

Crape myrtles thrive in our intense Arizona sun, making them perfect for hot, exposed locations where other plants might struggle. They thrive in our dry air and tolerate a wide range of soil conditions as long as the soil drains well. The key to success in Prescott lies in selecting the right varieties and providing proper care, especially during their establishment period.

Choosing the Right Crape Myrtle for Prescott

Not all crape myrtles are created equal when it comes to cold hardiness. For Prescott, it is crucial to choose varieties specifically bred to withstand colder temperatures. Look for cultivars labeled as “cold hardy” or “mountain hardy.” Excellent choices for our region include Pink Slush, Acoma White, Pocomoke Red, Purely Purple, Natchex and Like a Latte with its black foliage is striking. These often reach mature heights ranging from dwarf shrubs at 3 feet to stately trees at 20 feet, so select a size that fits your garden space.

Planting Your Crape Myrtle for Success

Timing is important for planting crape myrtles. The best time to plant is in summer, after the danger of frost and when the soil has warmed by the summer sun. This gives the plant ample time to establish its root system before the colder temperatures of fall and winter arrive.

When you are ready to plant, dig a hole that is twice as wide as the root ball and just as deep. Loosen the soil at the bottom of the hole. I always recommend blending Watters “Premium Mulch” into the native soil at a 50/50 ratio. This enriches the soil, improves drainage and helps with moisture retention – all critical for healthy root development. Carefully remove the crape myrtle from its container, gently loosen any circling roots, and place it in the hole so that the top of the root ball is level with the surrounding soil. Backfill the hole with your enriched soil mixture, gently tamping down to remove air pockets.

Watering: The Most Critical Step

Proper water is paramount, especially during the first two seasons after planting. This is when the plant is establishing its root system. Immediately after planting, give your crape myrtle a deep watering. For the first few weeks, water every two to three days, ensuring the soil remains consistently moist but not waterlogged.

Once established, crape myrtles are remarkably drought tolerant. However, for optimal blooming and growth, they appreciate deep watering every seven to 10 days during Prescott’s hot summer months. Reduce water frequency in the fall as temperatures cool, and water sparingly, if at all, during winter. Overwatering is a common mistake that can lead to root rot, so always check the soil moisture before watering. Stick your finger a few inches into the soil; if it feels dry, it is time to water.

Fertilizing for Abundant Blooms

Crape myrtles are heavy feeders; a balanced feeding schedule will encourage more prolific blooms and vigorous growth. In early spring, just as new growth begins, apply a slow-release granular fertilizer like Watters 7-4-4 All Purpose Food. This provides a steady supply of nutrients throughout the growing season. Avoid high-nitrogen fertilizers, which can encourage leafy growth at the expense of flowers.

Pest and Disease Resistance

One of the many appealing aspects of crape myrtles is their general resistance to most pests and diseases. Occasionally, you might encounter powdery mildew, especially in humid monsoon conditions or if air circulation is poor. Ensure good air circulation through proper spacing and pruning. Aphids can sometimes be an issue, but a strong spray of water or an application of insecticidal soap will usually take care of them.

By following these guidelines, you can successfully grow stunning crape myrtles in your Prescott garden. Their long season of bloom, attractive bark and beautiful fall color will add a touch of Southern charm to your landscape, proving that even in the mountains, we can enjoy these magnificent plants.

Until next month, I’ll be helping gardeners grow Summer Crape Myrtles here at Watters Garden Center. QCBN

By Ken Lain

Ken Lain can be found throughout the week at Watters Garden Center, 1815 Iron Springs Road in Prescott, or contacted through his websites at WattersGardenCenter.com or Top10Plants.com.