How do you keep your crape myrtles in tip-top shape throughout the summer and fall?

Crape myrtles grow well in many different types of soil, but you get the best growth when plants are set in well-drained, amended soil. They will grow in full or part sun. Mulching with a 3- to 4-foot ring around the base of the tree will help retain moisture and protect the tree from possible lawn maintenance equipment.

When planting a new crape myrtle, make sure it is watered every two to three days for the first six weeks. After flowering, old bloom pods should be removed to encourage more flowering throughout the summer. Prune to shape in the winter. Some people prefer to prune from the bottom up to create a palm tree shape, while others prefer the tree to retain its natural shrub shape.

Frequent light applications of a balanced fertilizer such as 8-8-8 or 10-10-10 fertilizer will get a newly planted tree or shrub off to a good start. Established trees should receive a half cup of fertilizer per plant every six to eight weeks during the growing season. Larger trees should be fertilized in spring and late summer. Make sure the entire root zone, which includes the area out and slightly beyond the canopy, is well fertilized.

Some common crape myrtle problems include powdery mildew disease, a fungus that produces a white powder on buds and leaves and causes leaf distortion and flower malformation. Spray the trees with a broad spectrum fungicide as directed on the label.

Root rot is another disease caused by excessive moisture. Make sure the plants are placed in a well-drained area. Aphids (sucking insects) can attack new growth and flower buds, causing distorted leaves and flowers. Spray the trees with insecticidal soap or you can use a systemic bug killer that can be watered into the ground.

While crape myrtles lose their leaves in the winter, they bloom between June and September. Flower colors include white, purples, pinks and reds. Some may grow to a maximum of 3 feet, while others can grow as high as 20 feet.

If you are looking for a fast-growing, drought- and cold-tolerant flowering tree, the crape myrtle is the way to go. There most certainly will be one to choose from in your favorite color.

Wanda Cannon is a Master Gardener trained through the Hall County program and also serves as Master Gardener coordinator and horticulture assistant for the Hall County Extension office. Phone: 770-535-8293.