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MNLA E-Training, Project Plant

Hemlock Woolly Adelgid

Photo courtesy of Connecticut Agricultural Experiment Station

On July 5, 2017, Michigan’s Hemlock Woolly Adelgid (HWA) Interior State Quarantine will go into effect. Established by the Michigan Department of Agriculture & Rural Development (MDARD) to prevent the further spread of HWA in Michigan, this quarantine regulates movement of Hemlock WITHIN Michigan. Whereas the pre-existing HWA Exterior Quarantine, already in place, will continue to regulate movement of hemlock from out-of-state sources.

This Interior Quarantine establishes a regulated area consisting of Allegan, Oceana, Ottawa and Muskegon Counties. Movement of Hemlock (Tsuga spp.) and Tiger-tail spruce (Picea torano) nursery stock (and any part of those species’ trees that presents the risk of spreading HWA) is prohibited from the regulated area into any other counties in MI, except under a compliance agreement. The quarantine also prohibits movement within the regulated area, except under a compliance agreement.

The HWA Nursery Program Facility Compliance Agreement was developed in conjunction with the industry and is issued by the MDARD. It specifies treatments and other phytosanitary measures to mitigate the risk of spread of HWA. This compliance agreement can be obtained by contacting your MDARD inspector.

Click HERE to go to the MNLA Legislation & Compliance Center for more information including the Infestation Map, the Interior and the Exterior Quarantines, the HWA Nursery Program, and the template for the Compliance Agreement.