The University of California Cooperative Extension (UCCE) expects peak moth numbers by the end of June, with armyworm numbers peaking two weeks later.
The UCCE says their continued monitoring has revealed some small worms already in the field, mainly near borders and levees. They note that these worms eat very little and cause minimal defoliation.
To see the armyworm trap map, annual trend comparisons, or to view moth numbers by location you can sign up to receive weekly armyworm updates by clicking here.
