NORTON SHORES, Mich. — A small insect could create a huge problem for one of Michigan’s most prominent tree species. Hemlock Wooly Adelgids, or HWAs, are tiny insects that nest at the base of ...

The hemlock woolly adelgid first started becoming a problem in the Finger Lakes in the 2000s. The invasive species can kill hemlock trees as the pest feeds, leading to series problems for plants ...

The western hemlock, Washington’s state tree, can grow to more than 200 feet tall. It’s found at sea level and high elevations from northern California well into Alaska.

Hemlock woolly adelgid only requires a light wind to be rapidly spread and on average spreads at a rate of 7.6-7.8 miles each year. 70 percent of Pennsylvania’s forests are owned privately ...

The tiny insects found the sap of Eastern hemlocks delicious and began to multiply, decimating hemlock trees. By the time the problem raised alarms in the 1970s, the outbreak could not be contained.

The pest poses a problem for homeowners who have planted or previously had hemlock trees, but the infestation is not a significant threat to Washtenaw’s natural resources and environment ...

A problem in much of the Northeast, including all of New England, wooly adelgids were detected in Rhode Island in the late 1980s, according to Lisa Tewksbury, director of the URI Biocontrol ...

The Eastern Hemlock – a majestic, ancient tree species found across the Eastern United States and Canada – offers shelter, food, and protection for over 120 species of vertebrates. Other ...

The hemlock sawfly is native to Southeast Alaska. But for the past few years, the tiny insect has been causing some big problems. Bug scientists think drought conditions played a major role in a ...

A new hemlock hybrid named Traveler, 20 years in the making, has been developed by the Agricultural Research Service to address the devastating effects of a pest named the hemlock woolly adelgid.