Penn State Extension

10 Results

List Grid

Why are My Spruce Trees Dying?
Why are My Spruce Trees Dying? - Videos Videos

Why are My Spruce Trees Dying?

Kimberly Bohn, Ph.D.

7:09

Learn how to identify types of spruce trees, symptoms of two common fungal diseases, and what if any treatments are available. More
James B. Hanson, USDA Forest Service, Bugwood.org
White Pine Weevil - Articles Articles
The white pine weevil is considered the most destructive insect pest of eastern white pine in North America. More
Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org
Western Conifer Seed Bug - Articles Articles
The western conifer seed bug feeds on Douglas-fir seeds and other species of pine. This bug can also become a nuisance to homeowners in the fall. More
USDA Forest Service - Region 4 - Intermountain, USDA Forest Service, Bugwood.org
Spruce Spider Mite - Articles Articles
The spruce spider mite attacks spruce, arborvitae, juniper, hemlock, pine, Douglas-fir, and occasionally other conifers. More
Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org
Elongate Hemlock Scale - Articles Articles
The elongate hemlock scale, sometimes known as the fiorinia scale, is a serious armored scale insect pest on ornamental and forest hemlock trees in Pennsylvania. More
Spotted Lanternfly - Host Study
Spotted Lanternfly - Host Study - Videos Videos

Spotted Lanternfly - Host Study

Dr. Gregory Setliff

18:32

Studies were conducted in 2015 and 2016 to determine what plants Lycorma delicatula (spotted lanternfly) will feed on throughout the growing season. More
Photo: Jim Occi, BugPics, Bugwood.org blacklegged tick Ixodes scapularis
Ticked Off About Ticks - Articles Articles

Ticked Off About Ticks

Sandy Feather

Pennsylvania has led the nation for the last five years in confirmed cases of Lyme disease, according to the Centers for Disease Control. More
Photo: Elizabeth Bush, Virginia Polytechnic Institute and State University, Bugwood.org - vole Microtus spp. flowering dogwood, Damage: dieback and off color foliage
Vole Control in Overwintering Nursery Stock - Articles Articles
You know the situation…you and your crew spent days cleaning, pruning and moving perennial and nursery stock into your overwintering houses. More
Hemlock Woolly Adelgid (HWA)
Hemlock Woolly Adelgid (HWA) - Articles Articles
Hemlock woolly adelgid is a destructive, introduced pest of forest and ornamental hemlock trees. More
Ornamentals and Deer: Realities and Landscape Plant Options
Ornamentals and Deer: Realities and Landscape Plant Options - Articles Articles

Ornamentals and Deer: Realities and Landscape Plant Options

Jim Sellmer, Ph.D., Rick Bates, Ph.D., Gary San Julian, Ph.D.

There is much frustration toward the prevalence of deer and the damage they cause. More