The hemlock woolly adelgid (HWA), Adelges tsugae, was first described in western North America in 1924 and first reported in the eastern United States in 1951 near Richmond, VA. This small aphid-like bug attaches to hemlock trees at the base…
Hemlocks & HWA
Follow the links below to learn more Hemlocks The Importance of Hemlocks World-wide distribution of hemlock species Eastern hemlocks Benefits of hemlocks Consequences of loss of hemlocks Hemlocks and Water Carolina Hemlock (coming soon) Factors Threatening Appalachian…
The Importance of Hemlocks
At least ten distinct species of hemlock exist in the world today. A new species, Tsuga ullengensis which occurs on Ulleung Island in Korea was delineated in 2017 by Holman et al. All Tsuga species occur at roughly the same…
Factors Threatening the Appalachian Hemlock
Hemlock woolly adelgid Other pests and pathogens (coming soon)