The height and circumference measurements listed here are for the largest-known hemlock tree in the Atlanta area. This tree is located in Fernbank Forest.
Unlike other evergreens, Hemlock needles are flat.
The hemlock woolly adelgid (HWA). This insect is destroying hundreds of thousands of acres of hemlock trees in the Eastern United States. Read this fact sheet for more information about it. A lengthy New Yorker article by our friend Richard Preston about this terrible infestation also details efforts by another friend, Will Blozan, and others to combat it.
Needles: Will Cook, CarolinaNature.com
Cones: Austin Szubryt, austinbotany.wordpress.com
Bark: Wanda Rice, amc-nh.org
HWA Infestation photo (left) by Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Forest photo (right) by Jason Van Driesche, Bugwood.org