Biocontrol Lab

Plant Sciences & Entomology, College of the Environement and Life Sciences

Hemlock Woolly Adelgid

Pseudoscymnus tsugae, a predator of Adelges tsugae on Tsuga canadensis in the landscape


Tsuga canadensis (L.) Carrière is considered among the most graceful and beautiful of the evergreen conifers. Eastern hemlock is one of the most common woody ornamentals in the landscape and in nursery production. It is used extensively in foundation, hedge, and screening plantings. Despite its popularity, the future ornamental use of T. canadensis is bleak because of the damage caused by A. tsugae, the hemlock woolly adelgid.

View the presentation 

Think Big We Do

Copyright © 2015 University of Rhode Island.