Until recently, I was unaware that the eastern hemlock trees were under such an all out attack, and now I am on a mission to inform more people and what they can do to help combat this horrible, devastating problem. These trees are under an ever increasing threat from the hemlock woolly adelgid (Adelges tsugae), an invasive insect. This invasive insect can completely decimate a hemlock within 3-6 years after infestation.