Forest.Health (https://forest.health/doc/Forest.Health_Description.pdf) has identified 13 tree species threatened by exotic invasive pests. Both eastern and Carolina hemlock are included.
A new species of hemlock discovered on a small Korean island is probably already endangered. Read more: https://news.nationalgeographic.com/2018/01/ulleungdo-hemlock-tree-discovered-korea-wooly-adelgid/
In a letter to the U.S. Department of Agriculture’s National Institute of Food and Agriculture (NIFA), 20 prominent scientists encouraged NIFA to create a special “division” within the NIFA funding structure devoted solely to all aspects of forest health. Read more: Bonello-Villari NIFA Listens 12.01.17
The NC Forest Service (NCFS) Nursery Program is in the beginning stages of collaboration with NCFS, US Forest Service and NC State University to produce hemlock seedlings. They are planning on producing both Eastern hemlock and Carolina hemlock this coming season. Hemlocks are in severe decline from hemlock woolly adelgid (HWA). The goal for this [...]
This 24 minute video is featured in a story about "hemlock pest has breached Adirondack forests for first time, DEC reports." Read more: http://buffalonews.com/2017/07/31/dec-finds-invasive-pest-breaches-adirondack-forest-first-time/
It's an odd bug from Asia that doesn't need males to reproduce and spends almost all of its life in one spot, eating and eating, as it encloses itself in a waxy, wool-like cocoon for protection. Read more: http://www.wzzm13.com/news/local/michigan/invasive-asian-bug-threatening-michigans-hemlock-trees/452658590
Vidio produced by the US Forest Service reviews the research and development on the hemlock woolly adelgid that the US Forest Service is involved in. https://youtu.be/B9t8NjZyNVU
The hemlock wool(l)y adelgid (HWA) seems to be more prevalent this year. The most obvious indicator that you have HWA is the appearance of a cottony-like substance in the needles. The HWA feeds at the base of the needles of the hemlock tree causing the needles to die and preventing the formation of new apical [...]