Bay Co., Midland to start invasive species treatment

Spongy Moth Caterpillar
Spongy Moth Caterpillar(State of Wisconsin Department of Agriculture, Trade and Consumer Protection)
Published: May. 23, 2023 at 11:38 AM EDT
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BAY CO., Mich. (WNEM) - The Bay County Forest Sustainability Program will start treatment to protect trees from invasive insects, including Spongy Moth caterpillars.

Spongy Moth caterpillars and other invasive insects damage, feed, and defoliate trees and plants in surrounding areas.

Related: Invasive species program gets new name

The treatment will occur either on Thursday, May 25, or Friday, May 26.

Weather permitting, spraying treatment will start at 7 a.m. going to midday. Yellow airplanes will fly low over the tree tops spraying the area.

If weather parameters change spraying will be postponed.

The spray treatment Foray 48B, is a water-based insecticide, certified organic, and has a low impact on non-target organisms like humans, pets, birds, fish, and other insects.

The active ingredients will only affect Spongy Moth caterpillars that will be feeding at the time of spraying.

For more information about spraying, contact Jeremy Lowell at 989-895-4195 or email at

The city of Midland is also conducting aerial treatments. Those treatments started May 23 and continue through Friday, May 26. Most of the spraying will be done during morning hours.

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