Forest tent caterpillars ravaging northern Michigan trees - WNEM TV 5

Forest tent caterpillars ravaging northern Michigan trees

Posted: Updated:
Source: Michigan DNR Source: Michigan DNR
LANSING, MI (AP) -

Trees in Michigan's northern Lower Peninsula are dealing with a periodic attack from forest tent caterpillars.

The caterpillars strip leaves from oaks, aspens and sugar maples. The Department of Natural Resources says widespread outbreaks happen every 10 to 15 years.

Forest health specialist Roger Mech says trees rarely die from tent caterpillar defoliation unless already weakened by drought or other stresses.

Caterpillar feeding has ended for this season, so spraying insecticides is no longer an effective control method.

Instead, landowners should make sure affected trees get at least one inch of water per week during the growing season. Applying a slow-release fertilizer in the fall can help them recover.

Removing dead or ailing trees can keep others in a woodlot healthy by providing more sunlight and reducing competition for nutrients.

Copyright 2017 The Associated Press. All rights reserved. 

Powered by Frankly
WNEM
Powered by WorldNow CNN
All content © 2017, WNEM; Saginaw, MI. (A Meredith Corporation Station) . All Rights Reserved.
For more information on this site, please read our Privacy Policy, and Terms of Service, and Ad Choices.