Gypsy Moth Treatments

As of July 2021, the Entomological Society of America has discontinued the use of “gypsy moth” as a common name for Lymantria dispar. A new common name has not yet been selected. The changes will need to be reconciled in accordance with federal and state regulations that will also need to be updated. The Minnesota Department of Agriculture is committed to phasing out the discontinued common name and adopting the new common name when available. Documents and other materials will be updated to educate the public about the name change.

2021 Treatment Areas

The MDA, in collaboration with federal, state, and local partners, treated gypsy moth populations at 13 sites in the spring/summer of 2021. Gypsy moths are an invasive insect, and our state monitoring program has found a high number of moths in these areas.

**13 Gypsy Moth Treatments Sites**
County	Area	Proposed Product	Maps	Notification	Treatment Dates
Carlton & St. Louis	Esko	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed July 13.
Hennepin	Loring Park	Btk (x2) Ground application	Aerial Street	Sign up for text or email notifications for this area.	First application was May 17 & 18. Second application was May 26.
Houston	Jefferson	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed June 28.
Houston	Mound Prairie	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed June 30.
Houston	Brownsville	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed June 28.
Lake & St. Louis	French River	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed July 14.
St. Louis	New Duluth	Btk (x2)	Aerial Street	Sign up for text or email notifications for this area.	First application was June 15. Second application was June 18.
Wabasha & Winona	Weaver	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed June 30.
Winona	Dakota	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed June 30.
Winona	Homer Ridge	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed June 30.
Winona	Pea Ridge (New Hartford Township)	Btk (x2)	Aerial Street	Sign up for text or email notifications for this area.	First application was May 22. Second application was May 26.
Winona	Pleasant Hill	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed June 28.
Winona	Wiscoy	Mating Disruption	Aerial Street	Sign up for text or email notifications for this area.	Application completed June 28.

Learn More

Determining Treatment Sites

Consequences of Not Treating Gypsy Moth

2021 Treatment Areas

13 Gypsy Moth Treatments Sites

Arrest the Pest

Kimberly Thielen Cremers