Strawberry: Cutworms and armyworms

Photo by: Unknown
Use IPM (Integrated Pest Management) for successful plant problem management.

Biology
Cutworms and armyworms are the larvae of noctuid moths. These common moths are medium-sized with fairly dull coloration. The greenish, grayish, or tan caterpillars are hairless, nocturnal, and generally spotted, striped, or otherwise marked. They may be 1/4" to 1" in length and tend to curl up when disturbed. They may climb into the plant and feed on foliage, buds, flowers, or fruit. Armyworm behavior is similar to that of cutworms, but armyworms feed in large groups instead of individually. They tend to be voracious feeders. The caterpillars typically spend the day just beneath the soil surface or under debris near the host. Weeds are a primary food source for both cutworms and armyworms.

Management Options

Select Non-chemical Management Options as Your First Choice!!
Revision Date:4/30/2013
Apply when pests are present. Bacillus thuringiensis will provide some control if caterpillars eat enough of it. Use a spreader-sticker with liquid Bt formulations.

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Hortsense web site created by Carrie Foss, Pesticide Education, and Art Antonelli, Extension Entomology, WSU Puyallup
Pesticide information review provided by Catherine Daniels, Washington State Pest Management Resource Service
Database programs developed for Hortsense by Kathleen Duncan, Computer Resources, WSU Pullman
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