2022 Treatment Areas
The Minnesota Department of Agriculture (MDA), in collaboration with federal, state, and local partners, treated spongy moth populations at four sites in the spring/summer of 2022. Spongy moths are an invasive insect, and our state monitoring program found a high number of moths in these areas.
Interactive 2022 Treatment Map
Aerial Treatment Applications
The MDA contracts aircraft to apply aerial treatments in Minnesota. Aircraft may begin flying shortly before sunrise and continue through the day when weather conditions are most ideal for treatment application. The aircraft flies over the treatment block, going back and forth in a zig zag like pattern. The aircrafts fly very low (about 50 feet above the treetops) and are very loud. Residents may be awakened by the noise of the low-flying aircraft.
Virtual Open Houses
The MDA hosted hour long virtual open houses for citizens to learn more about the four treatment areas. Topics covered included general insect biology, distribution, management, and aerial treatment information.
The New Duluth and Cloquet open house was held February 22, 2022. The Lake County open house was held February 15, 2022.
View a recording of the New Duluth and Cloquet presentation on YouTube
| County | Area | Product | Maps | Treatment Dates |
|---|---|---|---|---|
| Carlton | Cloquet | Btk (x2) Aerial application | First application completed June 22. Second application completed June 29. | |
| St. Louis | New Duluth | Btk (x2) Aerial application |
First application completed June 22. Second application completed June 29. |
|
| Lake | Two Harbors NE |
Mating Disruption Aerial Application |
Completed July 18 | |
| Lake | Upland Trail | Mating Disruption Aerial Application |
Completed July 18 |
