How to Prune Mahonia

Written by amy hannaford
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How to Prune Mahonia
Mahonia in summer (

Mahonia, commonly referred to as Oregon grape, is an evergreen shrub with dark blue berries and glossy, leathery leaves. There are dozens of species of Mahonia. While other plants lay dormant during the winter months, Mahonia provides a welcome burst of colour to the winter landscape. Its yellow flowers bloom from late winter through February or April. Mahonia typically grows 4 to 10 feet tall and 5 feet wide. Pruning is best done in late summer.

Skill level:
Moderately Easy

Things you need

  • Pruning shears

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  1. 1

    Prune out old, woody canes. Cut out about one-third of them. This encourages new growth.

  2. 2

    Trim stems back to shape. Cut above a leaf joint, where the leaf attaches to the stem.

  3. 3

    Cut stems to different heights to create a well rounded, manicured look. If you prefer a bushy look, leave some stems near the ground. Work up from the bottom when trimming and cut the stems longer as you work toward the top.

  4. 4

    If necessary, cut out a branch to reduce the spread of the shrub. Continue shaping until the desired look is achieved.

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