Crepe myrtles may not bloom due to poor pruning, low light, watering issues, weak soil, or pests. For better blooms, give them sun, compost-rich soil, steady water, and prune only after flowering.

Known as the “lilac of the South,” crepe myrtles can’t help but impress when they produce their colorful bounty of crepe paper-like flowers from spring through early fall. But if you’ve ever struggled ...