Pest Alert – Canker on Southern Magnolia

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en Español

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The Southern Magnolia is a popular plant in the landscapes of North Carolina. Lately, we have been seeing dead branches in the canopies of magnolias. Closer inspection reveals swollen cankers on the affected branches.

A magnolia tree in bloom.

A limb of a magnolia tree with a canker.

A limb of a magnolia tree with a canker.

Fungi such as botryosphaeria and nectria infect wounds on limbs caused by hornets, woodpeckers and freeze. Canker disease kills branches. These branches should be pruned out of the tree. Try to prevent canker infections by keeping the tree healthy. Water trees in dry weather conditions and regularly fertilize trees.

Written By

Steve Pettis, N.C. Cooperative ExtensionSteve Pettis, Jr.Extension Agent, Agriculture - Consumer and Commercial Horticulture Call Steve Email Steve N.C. Cooperative Extension, Henderson County Center
Posted on May 24, 2022
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