Biology of Mint Root Borer (Lepidoptera: Crambidae) and Control Options on Ca…

ABSTRACT. Mint root borer, Fumibotys fumalis (Guene´ e), larvae cause damage to peppermint by feeding on rhizomes belowground. This species can cause significant economic damage and occurs throughout all peppermint-growing regions in Washington, Oregon, Idaho, and California. Until 2009, managing economic populations was limited to fall or spring tilling, and postharvest application of the o…