If you trim or cut back at this woody part.

How to prune rosemary bushes?

Selective thinning. Selective thinning is a pruning method that is practiced in both indoor and outdoor gardens. Using Heading cuts.

However, you can also begin as early as the last weeks of winter, or hold off until things start cooling off in the fall.

This type of pruning involves removing parts of stems or branches. Heading cut pruning helps the growth of Renovating or. Pruning rosemary plants and bushes are essential to do at least once a year to make sure the plant is healthy and good-looking. Keep your rosemary young with annual trimming/pruning, a regular bit of a cut back in order to promote new growth.

Articles about pruning trees and plants How to Prune Rosemary.