hemlock woolly adelgid (HWA) and other threats. They put together a great video entitled "Hemlock Woolly Adelgid an Educational Film" as well as a number of other resources that I wanted to share with my readers. This information is applicable to much of Pennsylvania still. In particular, I found the "Treatment Options" link to be very helpful. Copied below is information from their home page. If you are still struggling with HWA be sure to check it out.
The mission of the New York State Hemlock Initiative is to coordinate research, management, and volunteers to conserve New York State’s hemlock resources in the face of multiple threats, particularly that posed by an invasive pest, the Hemlock Woolly Adelgid.
The New York State Hemlock Initiative (NYSHI) coordinates the state-wide effort of multiple agencies and other interested groups to conserve the state’s hemlock resources. Mortality due to Hemlock Woolly Adelgid (HWA) in New York has increased at an alarming rate recently. It is critical that resources be brought to bear to develop a state-wide strategy to conserve the hemlock resources now, before it is too late.
The Hemlock Initiative is currently funded to work within the Finger Lakes region, but we are involved with hemlock conservation around the state, and are happy to provide information or connect organizations around New York. Our current projects are development of training materials for volunteer groups, establishing connections with Finger Lakes organizations and individuals with an interest in hemlock conservation, and organizing a hemlock prioritization workshop in 2016.