Learn how to prune this evergreen woody shrub/subshrub. Evergreen woody shrub/subshrub autumn sage (Salvia greggii) really benefits from late winter pruning, both for looks and long-term good health.

Spring is the best time to prune butterfly bushes. Pruning in the late fall or winter leaves them susceptible to frost damage. Wait until the spring to do a hard prune (pruning it back to one foot ...