Choose Crape Myrtles
In general, August is not the time to purchase and plant new trees. The exception to this rule is crape myrtles, since nurseries offer a good selection of blooming specimens this time of year. Don't just choose by bloom color; check bark, form, and mature size to ensure you have the best tree for your spot.
Tidy and fertilize all ever-blooming and autumn-blooming roses as soon as possible to produce a fabulous encore of flowers and close out the growing season with a flourish.
Cut Back Leggy Annuals
Trim any annuals that have become leggy, such as vinca, begonias, petunias, and coleus. Then, lightly cultivate the soil and feed with a liquid fertilizer to stimulate new growth.
Consider Spring-Blooming Bulbs
If you haven't received any bulb catalogs to date, take the initiative to look online at the variety of new and heirloom bulbs that can add to the beauty of your spring garden. A few of my favorite vendors include Brent & Becky's Bulbs, Old House Gardens Heirloom Bulbs, and The Southern Bulb Company. The most desirable bulbs always sell out quickly, so order early.
Watch for Spider Mites
Keep an eye out for spider mites on shrubs during hot, dry weather. Bronze-colored leaves might be a sign of infestation; check by taping a branch on a sheet of white paper and watching for the tiny critters.