Pest Alert - Fall Armyworm Caterpillars

(Updated: Sept. 5, 2024, 6:44 a.m.)
fall armyworm lawn
Fall armyworm damaged lawn.

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We are hearing of lots of reports of fall armyworms around Henderson County in both fescue lawns and pastures. NC State University's interactive fall armyworm sighting map will show you that the insects are showing in the east of the state and working their way west. Lawn care professionals should be looking out for these hungry caterpillars.

Fall Armyworm Damage

These caterpillars can devour an entire lawn or even acres of pastures seemingly overnight or in a matter of a few days. Often the armyworm outbreaks coincide with dry fall weather when grass is already stressed. Sometimes the fescue grass will come back but other times it dies. It recommended to overseed lawns and pastures that have been affected by armyworms to be on the safe side.

Scouting

Lawn care professionals and homeowners alike should be scouting their yard frequently for signs that the caterpillars are eating lawns. A solution of dishwashing soap poured over an area where you suspect the caterpillars to be feeding will force them to surface. If they are detected you should spray while the caterpillars are still small with a product such as Dipel or Spinosad (labeled organic), imidicloprid, or pyrethroids such as bifenthrin.

Learn more here: Fall Army Worm article from NC State University 

fall armyworm
Fall armyworm image by Matt Bertone, PhD, NC State Plant Disease and Insect Clinic

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armyworm damage
Fall armyworms can destroy an entire lawn in days

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fall armyworm eggs
Fall armyworms lay eggs on trees and structures near lawn infestations.

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