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Winterberry fruit. Photo credit: Mike Masiuk
Shrubs and Trees for the Winter Landscape - Articles Articles
Look for trees and shrubs that could beautify your property and nurture wildlife during the winter months. More
Photo credit: Lois Miklas
De-Icers and Plant Health - Articles Articles
Find out what effect winter de-icers can have on plants and which types are least harmful. More
Christmas Tree Farm Photo credit: Nancy Knauss
Master Gardener Tips for Christmas Trees - Articles Articles
How to choose the perfect Christmas tree and keep it fresh. More
Crabapples with vole damage. Note the English ivy being used as a ground cover. Photo: Tim Abbey, Penn State
English Ivy in the Landscape - Articles Articles
English ivy is an evergreen with dark green older foliage that has white veins, while new growth is a lighter green color. More
Stigmina Leaf Spot. Photo by Joseph OBrien, USDA Forest Service, Bugwood.org
Tree Diseases - Articles Articles

Tree Diseases

Tim Abbey

Living in the humid mid-Atlantic area, we have lots of fungal and bacterial diseases to contend with. More
A Cedar Waxwing takes advantage of a winter food source. A well-planned rain garden provides fruits, seeds and nectar and is a valued food source year around. Migrating birds will find refuge, food and shelter, completing this unique habitat.
Rain Garden - Biodiversity - Articles Articles
Creating biodiversity and habitat while conserving water. Basic information on rain gardens and plant material suggestions for each zone of a rain garden. More
Rain Gardens - the Basics
Rain Gardens - the Basics - Articles Articles
Rain gardens are a simple and resourceful way to use the stormwater from your gutters productively as a garden. More
Rain Gardens - the Plants
Rain Gardens - the Plants - Articles Articles
Suggested plant material (trees, shrubs and perennials) for the three rain garden zones. More
Planting Along Streams
Planting Along Streams - Articles Articles
If you have a stream on your property, even it’s small, you have the opportunity to both enhance your landscape and protect precious water resources. More
Red maple (Acer rubrum)
Plant Guide: Sun to Part Sun - Wet to Moist Soil - Articles Articles
Trees, shrubs, vines and perennials that are naturally found in sun to part sun and wet to moist soils. More
Mountain laurel (Kalmia latifolia) Linnaeus
Plant Guide: Shade to Part Shade - Dry to Moist Soil - Articles Articles
Trees, shrubs, vines and perennials that are naturally found in shade to part shade and dry to moist soils. More
Sweetbay (Magnolia virginiana)
Plant Guide: Shade To Part Shade - Wet To Moist Soil - Articles Articles
Trees, shrubs, vines and perennials that are naturally found in shade to part shade and wet to moist soils. More
Flowering dogwood (Cornus florida)
Plant Guide: Sun to Part Sun - Dry to Moist Soil - Articles Articles
Trees, shrubs, vines and perennials that are naturally found in sun to part sun and dry to moist soils. More
Oakleaf hydrangea in full bloom. Notice the shape of the leaves. Photo: T. Butzler, Penn State
A Guide for Selecting Shrubs for Pennsylvania Landscapes - Articles Articles

A Guide for Selecting Shrubs for Pennsylvania Landscapes

Jim Sellmer, Ph.D., J. Robert Nuss

Information for over 100 shrubs, including: the selection and aesthetic qualities of shrubs, and shrubs for specific conditions. More
Acer rubrum Red Sunset® on a commercial site with suspected glyphosate damage. Photo: S. Feather, Penn State
Use Glyphosate With Care Near Trees! - Articles Articles
Glyphosate is the active ingredient in non-selective, systemic herbicides sold under a variety of trade names – Round Up, Accord, Glypro, and many others. More
Damage to a row of boxwoods from boxwood leafminer. Photo: T. Butzler, Penn State
The Boxwood Leafminer Makes Its Yearly Entrance in Spring - Articles Articles
Boxwoods have many positive qualities that make it one of the most popular shrubs in the landscape. More
Four-lined plant bug adult. Photo: S. Feather, Penn State
Four-lined Plant Bugs Are Active Now - Articles Articles
Four-lined plant bugs, Poecilocapsus lineatus, become active in May. More
Organic Land Care Best Management Practices Manual
Organic Land Care Best Management Practices Manual - Articles Articles
This free manual provides recommendations to land managers and landscape contractors on best management practices for effectively conducting organic land care. 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
Whitney Cranshaw, Colorado State University, Bugwood.org
Snailcase Bagworm - Articles Articles
The snailcase bagworm is a moth (family Psychidae) that was accidentally introduced into the United States from Europe in the 1940s. More
Rhododendron Borer
Rhododendron Borer - Articles Articles
The rhododendron borer is a native pest of rhododendron, sometimes attacking mountain laurel and deciduous azaleas growing adjacent to infested host plants. More
Scott Tunnock, USDA Forest Service, Bugwood.org
Pine Needle Scale - Articles Articles
The pine needle scale is a key native pest of pine, Douglas-fir, spruce, and cedar in landscapes, nurseries, and Christmas tree plantations in Pennsylvania. More
USDA Forest Service - Northeastern Area , USDA Forest Service, Bugwood.org
Old House Borer - Articles Articles
The old house borer is an injurious wood-boring insect. The larva bores through pine, spruce, and other coniferous woods, weakening structural timbers. More
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