Watch for mimosa webworm

Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts. Check the label of any pesticide referenced to ensure your use is included.

We have had another relatively mild winter, so watch for defoliation of honeylocust trees from mimosa webworm this summer in southern Michigan. If you are planning on protecting them, watch for patches of foliage that turn brown in late June. Spray when you see the first signs of brown foliage, webbing and caterpillars. Last year, many trees turned completely brown before the webworm was found.

Mimosa webworm damage
Mimosa webworm damage.

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