This tiny parasite spreads across the forest by hitch-hiking on birds. HWA use sucking mouthparts to pierce through the base of the hemlock needles into the parenchyma cells (nutrient transport cells) ...

siphoning mouthparts to extract sap from hemlock trees. The DNR explained that this feeding weakens needles, shoots and branches. They said that over time. the tree's growth will slow and it will ...

Our hemlocks lack natural resistance to HWA, and HWA does not have natural predators in our country to keep its populations under control. All homeowners with hemlocks on their property need to be ...

If hemlock trees on your property show signs of hemlock woolly adelgid infestation, now is a good time to plan for spring treatment of this invasive species. Hemlock woolly adelgid, native to Asia, is ...

They also create cool, shady forests where other plants and animals thrive. But hemlocks are in danger. HWA sucks the sap from hemlock needles, causing the trees to weaken and die. When too many ...

GRAND RAPIDS, Mich. (WOOD) — If you have hemlock trees on your property, the time to protect them from a deadly invasive insect is approaching. The Michigan Department of Natural Resources says ...

The tree's signature traits include its short, wide needles and small cones. Hemlock trees can grow up to 150-feet tall and can be easily spotted in the Great Smoky Mountains, in the Cherokee ...

Eastern hemlock trees are a vital foundation species in ... The result is browning and dropping needles, then death of branches, and eventually death of the entire tree. Under the right conditions ...

In the lush, verdant forests of Pennsylvania, one tree stands as a sentinel of the state’s rich natural heritage: the Eastern ...

siphoning mouthparts to extract sap from hemlock trees," MDARD said. "This feeding weakens needles, shoots and branches. Over time, tree growth slows, and trees take on a grayish-green appearance.