News On Vermont Invasives

Below, you'll find news about the initiatives of our partnerships. You can also see upcoming events in our calendar or subscribe to our newsletter to receive updates on our work.

Monday, November 17, 2014

Early detection of the Elongate Hemlock Scale (EHS) is key to keeping Vermont’s forests healthy and functioning.  This invasive forest pest from Asia threatens hemlock trees (Tsuga canadensis).  Hemlock is Vermont’s 7th most common tree.  It provides many important ecological functions such as, providing winter shelter for wildlife and shading streams to keep...

Monday, November 17, 2014

Since 1951, when it first arrived from Asia, hemlock woolly adelgid has been spreading along the eastern seaboard of North America.  Hemlock woolly adelgids are tiny insects that feed exclusively on hemlock trees.  They are most easily spotted by looking for their round, fuzzy, white coverings on the underside of hemlock twigs.  Now found from Georgia to Maine, HWA has killed...

Monday, November 17, 2014

In 2014, hemlock health in general seemed to suffer.  We received calls from foresters for the first time, noting declining stands of hemlock and were able to map some of these in our aerial surveys.  Elongate hemlock scale was discovered coexisting with HWA in Windham County.  There were some hot, dry spells through the summer which may have stressed trees on droughty sites.

Monday, November 17, 2014

Mollie grew up in Ithaca New York, and came to Vermont to earn a BS from the Rubenstein School at the University of Vermont in Environmental Studies and a minor in Plant Biology. She has spent the past two and a half years working with the Vermont Chapter of The Nature Conservancy, helping to steward a network of natural areas and conservation easement across the state. In that position, she...

Monday, November 17, 2014

At the 3rd Annual Tree Stewards Conference, Mark Duntemann, Owner of Natural Path Urban Forestry, challenged us to make better decisions that create resilient forests instead of letting history repeat itself, as it did with the widespread replanting of ash following the loss of elms to Dutch Elm Disease (DED). “Our choices have trans-generational effects. Hopefully the choices we make today...

Thursday, November 13, 2014

WEST LAFAYETTE, Ind. - Researchers from Purdue and Colorado State universities have discovered that the fungus responsible for thousand cankers disease, a lethal affliction of walnut trees and related species, has a rich genetic diversity that may make the disease more difficult to control.

Adjunct assistant professor of forestry Keith Woeste and fellow researchers analyzed the genes of...

Wednesday, November 12, 2014

We are fortunate in this state to have public boat accesses that allow us to enjoy many of Vermont’s lakes and ponds. If you visited one of Vermont’s public boat accesses between Memorial Day and Labor Day, you may have interacted with a boat access aquatic invasive species greeter...

Wednesday, November 12, 2014

What may be the only Tree of Heaven (Ailanthus altissima) occurrence in Vermont has been reported this fall.  Found along a roadside in Chittenden County, this tree is a notorious invasive plant, and up till recently, Vermont has been one of the few states in the continental US without any records of this species. 

Monday, November 10, 2014

The emerald ash borer has prompted the state to extend its firewood quarantine to Rockingham and Hillsborough counties, after researchers recently found the pest in communities in both areas.

Merrimack County has also been under quarantine for the ash borer, which was first found in New Hampshire in 2013 and is considered the most destructive forest pest in North America. Federal...

Thursday, November 6, 2014

"The team has accomplished a major goal, the generation of a blight-resistant American chestnut tree," said Dr. Timothy Tschaplinski, a scientist at Oak Ridge National Laboratory who does chemical analysis for the research team to determine if the tissue of transgenic trees differs from that of wild-type trees. "The results of the metabolite analyses indicate that the nuts...