The Warning Signs

Invasive Hemlock Woolly Adelgid (HWA) is decimating America’s Eastern Hemlock Forests.

The Warning Signs

“HWA is capable of explosive rates of population increase” – Dr. Carole Cheah

HWA is dangerously communicable.  It spreads from tree to tree, property to property, forest to forest and beyond. The woolly egg sacks open releasing hundreds and thousands of crawlers that fall like sand and blow in the wind, are carried by birds and drop onto other animals, people and objects.  Any medium is capable of transferring the pest from tree to tree.  The results are catastrophic.  Discolored and falling needles are just the first signs that your trees are in serious trouble.

Presence of white, cottony egg sacs clinging to the underside of Hemlock branches?
Gradual fading and browning of limbs?
Graying, dry or brittle needles which begin dropping?
Trees with skeletal, spider web-like appearance and defoliated understory?
Presence of one or more other pests/diseases such as spider-mites and scales? [US Forest Service Photo]

 

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