Either cut them back to a larger branch or cut them back to just above an outward-facing bud. Heading back is pruning to reduce height or keep a shrub compact. You cut back to a bud, in order to remove the end of a branch. The trick is not to cut the branches at a uniform height. This creates a witches-broom effect.
Rejuvenation is the most severe pruning, so normally is done when shrubs are dormant.
Soon, your shrub will again be a younger-looking version of itself . Supported by county, state, federal and private funds, the program has county Extension offices, experiment fields, area Extension offices and regional research centers statewide. Its headquarters is on the K-State campus in Manhattan. Joe Camoriano, Pat Melgares, Mary Lou Peter, Nancy Peterson, Linda Sleichter, Kathleen Ward.