Spongy Moth Management Happening Soon in Rochester

The Minnesota Department of Agriculture (MDA), in collaboration with federal partners, has identified three areas in the City of Rochester that will be aerially managed to slow the spread of spongy moth in Minnesota.

What is spongy moth?

Spongy moth (Lymantria dispar) is an invasive insect that is a significant threat to the economy, environment, and human health. Spongy moth has caused billions of dollars in property damage and defoliated millions of acres of forest. Spongy moth caterpillars can feed on over 300 tree species, including some of Minnesota’s most common trees.

How is spongy moth being managed in the city?

A mating disruption product, SPLAT GM-O (Specialized Pheromone and Lure Application Technology Gypsy Moth-Organic) will be used. This is a pheromone that stops male moths from finding females, preventing mating. It is applied via low flying aircraft to the tree canopies. Applications could happen early in the mornings, with planes often flying in the area for several hours.

SPLAT GM-O is harmless to humans and animals. All the ingredients in SPLAT GM-O are listed by the EPA as safe.

When is this management activity happening?

The aerial management activities are scheduled between June 24-26. However, these dates are weather dependent and may last through July 1.

What areas of the city are being aerially managed for spongy moth?

An interactive map of spongy moth management activities is available on the MDA website.

How do I stay informed or get more information?

More information on spongy moth management is available at www.mda.state.mn.us/smmanagement. You can also sign up for text or email alerts to stay up to date on the management proposal by visiting the MDA website.

For questions, comments, or concerns, email reportapest@state.mn.us or call 1-888-545-6684.