Barberry doesn't shear well, so prune individual branches back into the bush to encourage new growth to arch gracefully. Evergreen wintergreen barberry (Berberis julianae), hardy in U.S.
Department of Agriculture plant hardiness zones 6 through 9a, may be pruned from late winter through early spring. Its flowers are also yellow, and appear in spring. This barberry grows slowly and stops at about 12 inches tall, but exceeds that in width.
If it gets untidy, trim it into shape after it flowers. May 12, I like to do this kind of pruning in the spring, once the plant has started to leaf out. You can do it just about any time, but I would avoid late summer, as any new growth won’t have time to harden off before winter frosts treelopping.buzzted Reading Time: 3 mins.
When to Prune Barberry Shrubs? Pruning the barberry bushes yearly is important to aid in better growth and blooming. They produce fruits or berries that create seedlings. It is recommended that you prune the shrubs after they have fruited, during fall or treelopping.buzzted Reading Time: 5 mins. Sep 21, Make a degree cut close to the main trunk of the shrub. Do this removal first so you can judge the evenness of the plant when using the hedge clippers.
Decide which type of pruning the barberry requires.
Rejuvenation pruning involves removing 1/3 of the plant close to the center stem. Use hand-held or electric hedge clippers to shape the plant.