Latest News and Announcements

If some hemlock trees can just hang on, birds that need them may be OK

"Still, we had a lot of these hemlock-associated bird species hanging around. So on a local scale where we are managing, like in a national park, for example, if we can keep enough hemlocks alive, [...]

May 9th, 2017|Categories: News|

Beetles Making Difference in Woolly Adelgid Fight at Pennsylvania Park

Almost 20 years after the woolly adelgid arrived at Nay Aug Park and started threatening the hemlocks in and around the gorge, officials believe they’ve finally gained the upper hand against the invasive, tree-killing pest, [...]

April 21st, 2017|Categories: News|

Sandburg Home ramps up hemlock woolly adelgid fight

Tiny bugs with big appetites are the latest hope for the hemlocks at Carl Sandburg Home National Historic Site. Resource managers at the 264-acre National Park Service site in Henderson County have released more than 700 [...]

April 14th, 2017|Categories: News|

Team predicts increasing decline of hemlock as winters warm

Today, an estimated 26 percent of the region's hemlock stands are at high risk. As winters get warmer, the decline will increase, with 43 percent of stands expected to be at high risk. Read more [...]

April 7th, 2017|Categories: News|

Hemlock Seed Banking

Eastern and Carolina hemlock trees in more than 400 counties across 19 states are dead, dying, or threatened by infestation of the invasive hemlock woolly adelgid. As the aphid-like pest continues to spread throughout the ranges [...]

March 23rd, 2017|Categories: News|

Sap-sucking Bugs Threaten Hemlock Forests

Sap-sucking insects called hemlock woolly adelgids are draining the life from a common evergreen tree in the eastern United States. Since arriving from Japan in the 1950s, the tiny bugs have spread from Georgia to [...]

February 6th, 2017|Categories: News|

Invasive species pose risk to Tennessee homeowners and forests

The fight to protect East Tennessee's forests — and cities — from an invasive species continues expanding. The emerald ash borer has been found in 47 of the state's 95 counties, while 40 counties are know [...]

February 6th, 2017|Categories: News|

Ben Smith Featured in CALS Newsletter

At the Mountain Research Station in Waynesville, N.C., postdoctoral researcher Ben Smith patiently tends thousands of evergreen seedlings. His goal: to find at least a few that will tolerate two tiny but troublesome pests. Read [...]

January 1st, 2017|Categories: News|

White House wants researchers to focus on curbing invasives

The White House wants researchers to focus on curbing the impact invasive plants, animals and insects have on the U.S. environment and economy. With just a few weeks until his term ends, President Barack Obama [...]

January 1st, 2017|Categories: News|

Climate change strengthens an army of forest-eating insects

Hemlock woolly adelgids aren't native to North America, but droves of them have settled into American forests where they threaten entire ecosystems. Read more: http://www.csmonitor.com/Environment/2016/1209/Climate-change-strengthens-an-army-of-forest-eating-insects

December 19th, 2016|Categories: News|

Elevated light levels reduce hemlock woolly adelgid infestation and improve carbon balance of infested eastern hemlock seedlings

The title says it all: "Elevated light levels reduce hemlock woolly adelgid infestation and improve carbon balance of infested eastern hemlock seedlings." The full story authored by S.T. Brantley and colleagus is published in Forest [...]

December 8th, 2016|Categories: News|

Fitness and physiology of HWA in relation to the health of host tree

Studies have shown that once healthy hemlocks become infested by HWA, nutrients are depleted from the tree, leading to both tree decline and a reduction of the adelgid population. Since HWA is dependent on hemlock for [...]

November 30th, 2016|Categories: News|

Hemlocks on Lee Stand Still Healthy

The Lee stand in Wilkes County, NC has been infested with hemlock woolly adelgids for at least 7 years, yet the trees still look healthy. This is one of the most promising sites we have [...]

November 8th, 2016|Categories: News|

Destructive invasive species threatens Ottawa County hemlock trees

Hemlock woolly adelgid, an invasive species native to east Asia, is a tiny insect that consumes the sap of hemlock trees. According to the Michigan Department of Agriculture and Rural Development, the insect is responsible [...]

October 14th, 2016|Categories: News|

Losing most of Michigan’s eastern hemlock resource is a real possibility

An insect responsible for the loss of much of the eastern United States Appalachian region’s hemlock trees has found its way into Michigan. The hemlock woolly adelgid poses a threat to the state’s valuable hemlock [...]

October 4th, 2016|Categories: News|

Forest Health Research and Education Center Shares $3 Million NSF Grant

The Forest Health Research and Education Center (Forest Health Center), a collaborative project among the Forest Service Southern Research Station (SRS), the University of Kentucky, and the Kentucky Division of Forestry, will share a $3 [...]

September 23rd, 2016|Categories: News|

An Army of Beetles Could Help Save Dying Hemlock Forests

BENT CREEK EXPERIMENTAL FOREST, N.C. — When the woolly adelgids come and descend on the forest, the eastern hemlock dies. It’s been like this since the insect was discovered in Virginia in 1951. The aphid-like [...]

September 16th, 2016|Categories: News|

HEMLOCK A Forest Giant on the Edge

HEMLOCK A Forest Giant on the Edge  by David R. Foster editor. Yale University Press, 2014 I had never thought of eastern hemlock as a forest giant until I visited the mountains of western North Carolina. [...]

August 27th, 2016|Categories: News|

Smokies foresters fighting bug deadly to thousands of trees

Thousands of acres of hemlock trees in the Smokies are in danger because of an insect called the hemlock woolly adelgid. “We’re looking at some of the sadder picture of forest insects and disease,” said GSMNP [...]

August 26th, 2016|Categories: News|

Pennsylvania state tree under severe attack, prognosis unclear

That’s due to the one-two punch of two highly destructive insects: hemlock woolly adelgid (HWA) — an aphid-like insect — and elongated hemlock scale (EHS) — an armored insect. Both are foreign invaders: HWA from [...]

August 25th, 2016|Categories: News|

Mountain Xpress highlights Hemlock Restoration Initiative

Since its accidental arrival here from southern Japan about two decades ago, the hemlock woolly adelgid has killed hundreds of thousands of trees, devastating some forests in the region. Exact numbers are hard to come [...]

August 8th, 2016|Categories: News|

Tree-killing Hemlock Woolly Adelgids Hitch Rides on Birds

At first glance, you might not think these little bits of fluff could pose much of a threat. But, like Star Trek’s troublesome tribbles, hemlock woolly adelgids (Adelges tsugae) can quickly multiply and wreak havoc. [...]

August 2nd, 2016|Categories: News|

Fred Hain is Bringing Hope to the Hemlocks

Fred Hain knows that when a forest dies — from its deep root system up to its canopy that once teemed with birds, squirrels, and insects — it makes no sound. For the past two [...]

April 7th, 2016|Categories: News|

What’s eating our evergreen trees?

The balsam fir, a tree now starring in many homes as the centerpiece of Christmas decorations, has a tiny enemy in the wild. So does the hemlock, the Pennsylvania state tree. Balsam Woolly Adelgid [...]

December 16th, 2013|Categories: News|

American Forest Foundation Blog has article about hemlock woolly adelgid

A silent killer is blazing a trail through the Appalachians, leaving countless dead hemlocks in its wake. The assassin is a tiny invasive insect from Japan, the hemlock woolly adelgid (HWA). It is stealthy and [...]

February 17th, 2012|Categories: News|Tags: |

Robert Jetton and Fred Hain Receive Funding from the US Forest Service to Conduct Research on Infestation Techniques and Variation in Adelgid Susceptibility in Hemlock

In June of 2011, Robert Jetton (NCSU Camcore) and Fred Hain (NCSU Department of Entomology) received a $45,040 grant from the US Forest Service Southern Research Station for a new research project titled, “Evaluating Techniques for [...]

August 24th, 2011|Categories: News|Tags: , , , |

Reclaiming Hemlocks and Firs: A Symposium

The Alliance for Saving Threatened Forests (ASTF) is hosting a one-day (9a.m.-5p.m.) symposium reporting on host resistance research to the hemlock and balsam woolly adelgids.  The conference will take place October 26th at the Haywood [...]

Majestic Giants and Tiny Terrors

Call them one of “America’s  Most Wanted” invasive pests: the hemlock woolly adelgid (HWA).  After arriving here from Asia in the early 1950’s, these pesky aphid-like insects have devoured their way through millions of hemlock [...]

April 8th, 2011|Categories: News|

Did You Know?

How much do you know about the balsam and hemlock woolly adelgids? Here are some interesting facts about hemlocks, Fraser firs and the insects that attack them. Since all HWA are female, they reproduce asexually [...]

February 8th, 2011|Categories: News|Tags: , , |

ASTF Welcomes 2 New Staff Members

Ben Smith and Erin Mester have joined the Alliance for Saving Threatened Forests as new staff members. Ben Smith Ben Smith received a Ph.D. in Forestry from North Carolina State University in 2010. As [...]

February 8th, 2011|Categories: News|

Golden Leaf Foundation Provides Support for Christmas Tree and Hemlock Research

A collaboration of scientists joining forces against the balsam and hemlock woolly adelgids, insects that threaten Fraser fir and eastern hemlock trees, respectively, recently got new ammunition. A $65,000 grant from the Golden Leaf Foundation [...]

Breeding a better Christmas tree: NCSU Researchers Seek to Battle the Adelgids

A pile of cottony-speckled logs sits prominently against the back wall of entomologist Dr. Fred Hain’s research lab in N.C. State University’s College of Agriculture and Life Sciences. The logs are samples of a history [...]

October 21st, 2010|Categories: News|