Crepe myrtles (https://abodelook.com/knowledge-hub/crepe-myrtle/) can experience pest problems involving aphids and Japanese beetles, as well as diseases such as powdery mildew. Aphids may cause curled leaves and sticky residue, while Japanese beetles can damage foliage. Powdery mildew appears as a white coating on leaves and young shoots. Remove heavily affected plant material when appropriate and spray aphids off with water. Insecticidal soap may help control persistent aphid infestations. Provide good air circulation, avoid excessive nitrogen fertilizer, and choose resistant varieties to reduce disease problems. Regular inspections help catch issues early.