How to Manage Pests

Pests in Gardens and Landscapes

Twig blights—including Kabatina juniperi, Phomopsis juniperovora

Twig blights on hemlock cause foliage to wilt and turn brown, reddish, or yellow. Shoots die back and may be bushy, stunted, or form witches' brooms. The fungi that cause twig blights infect wet foliage through wounds.


Avoid wounding twigs. Prune out and dispose of infected shoots during dry conditions. Keep foliage dry by using drip irrigation and providing good air circulation. Avoid fertilization.


Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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