Harvard Forest

Harvard Forest is located in Petersham, MA and is a part Harvard University’s Faculty of Arts and Science. Numerous research studies are conducted at Harvard Forest annually. These studies can range from analyzing soil to tracking invasive species.


Our lab is currently conducting research on the effects of Hemlock Woolly Adelgid on hemlock trees in Harvard Forest. Hemlock Woolly Adelgid or HWA is an invasive species that is native to East Asia. This insect possesses a major threat for Hemlock tree. The Hemlock Woolly Adelgid lays eggs at the base of the Hemlocks needles. The eggs are visible with the naked eye. These eggs are covered by a waxy substance that appears as a cotton like substance. When the larva hatches, they consume the needles which in turn kills the tree in a matter of years.

Professor Crystal Schaaf’s Lab

School for the Environment
University of Massachusetts Boston
100 Morrissey Blvd.
Boston, MA 02125