Diamondback moth (DBM) has become a major challenge for Arizona brassica growers, with increasing reports of insecticide resistance and difficult fall and spring seasons.

To address this challenge, University of Arizona Extension entomologists and the Arizona Department of Agriculture, led by Dr. Wilfrid Calvin, collaborated to create new, practical guidelines for managing DBM in both transplant production and field settings.

The document offers practical, Arizona-focused strategies that can help prevent DBM and improve control.