The best time to prune loropetalum is in the late spring, just after the early blooming period finishes. Loropetalum typically blooms first in late winter or early spring on old wood. Pruning immediately after this bloom allows for shaping the shrub while preserving the majority of next spring's flower buds. This timing helps avoid cutting off flower buds and maximizes spring blossoms. You can also prune it twice a year: once in winter to open the plant and remove dead or damaged wood, and again in late spring after blooming for shaping and size control. However, pruning in winter will sacrifice some existing flower buds. If you want to keep spring blossoms, it is best to wait until April or after blooming for major pruning. Severe pruning is tolerated but should be done carefully to avoid removing too much at once—generally, remove only 25% to 33% at a time to maintain the plant’s natural form. Avoid pruning with hedge trimmers; use thinning cuts to improve air circulation and maintain a pleasing shape. In summary:

• Prune after flowering in late spring to preserve flower buds.
• You may prune lightly in winter, removing dead or damaged wood.
• Avoid heavy pruning before spring bloom to prevent losing flowers.
• Remove no more than a third of the plant if pruning heavily.
• Use thinning cuts rather than shearing to maintain natural form.

This timing and method will help keep your loropetalum healthy and blooming well year after year.