Caterpillars

Autographa gamma , Spodoptera spp. , Helicoverpa armigera
Contributor: Aarhus Universitet
Date Compiled: 2025
Creative Commons "Attribution-Share Alike"
Autographa gamma (silver-Y moth); Young caterpillar. October 2014. Image copyright: ©Harald Süpfle/via Wikimedia Commons - CC BY-SA 4.0

Monitoring

Solution
Monitoring practices begins in mid-to-late June, when the adult armyworms begin to migrate. Pay attention to the egg masses and first-generation larvae with yellow-white hairs on the back of vegetable leaves.

Control

Regulations surrounding biological products can change rapidly – always verify products recommended here with the most recent legislation and lists of products registered for your country
Solution
Bacillus thuringiensis subs. aizawai
The information made available here has been obtained from or is based upon sources believed by CABI to be reliable but is not guaranteed as to accuracy or completeness. Anyone acting or relying on such information does so entirely at their own risk. The efficacy of the IPM methods included above will depend on local conditions and might not always be suitable everywhere within the specified country.