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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
Pruning Flowering Shrubs
Pruning Flowering Shrubs - Articles Articles
The correct time to prune your flowering shrubs depends on when they flower. More
Whitney Cranshaw, Colorado State University, Bugwood.org
Fletcher Scale - Articles Articles
The Fletcher scale, sometimes referred to as the arborvitae soft scale, is a common pest of arborvitae and yew. It can also attack juniper, cypress, and hemlock. More
Milan Zubrik, Forest Research Institute - Slovakia, Bugwood.org
European Pine Shoot Moth - Articles Articles
The European pine shoot moth is a key pest of ornamental pine plantings, pines in production nurseries, and Christmas trees in Pennsylvania. More
Evergreens near a high use roadway are wrapped with burlap to give some protection from damaging salt spray.
Salt Spray Damage and Evergreen Plants - Articles Articles
Evergreens provide year long interest in the landscape and are normally pretty hardy during the winter months. More
Best Management Practices for Bee Health
Best Management Practices for Bee Health - Articles Articles
The Horticultural Research Institute, the research foundation of AmericanHort, announces the release of Best Management Practices for Bee Health in the Horticultural Industry. 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
Information for over 100 shrubs, including: the selection and aesthetic qualities of shrubs, and shrubs for specific conditions. More
Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org
Euonymus Scale - Articles Articles
The euonymus scale is a key pest of euonymus, pachysandra, and bittersweet. This armored scale insect is native to Japan and China. More
Pseudomonas syringae: A common pathogen on woody plants
Pseudomonas syringae: A common pathogen on woody plants - Articles Articles
The bacterium Pseudomonas syringae, is an opportunistic pathogen which attacks a wide variety of woody plants especially when they are damaged by frost or injury. More
Scheduling Disease Control In Woody Ornamentals
Scheduling Disease Control In Woody Ornamentals - Articles Articles
The scheduling of effective disease management measures is not a simple task nor can it be standardized. More
Twospotted spider mite (Tetranychus urticae) Photo: David Cappaert, Michigan State University, Bugwood.org
Twospotted Spider Mites - Articles Articles
One of our most common landscape pests is the two-spotted spider mite (Tetranychus urticae). More
Tree Diseases that Create Hazards
Tree Diseases that Create Hazards - Articles Articles
Certain diseases of trees weaken their structure and create a hazardous situation where serious damage could result from falling limbs or the toppling of the entire tree. More
The fragrant yellow flowers open in early spring and standout against the backdrop of the green foliage.
The Multi-Faceted Oregon Grapeholly - Articles Articles
Looking to add some diversity and oomph to your pollinator garden? Or maybe create a landscape that you can also eat? Check out the Oregon grapeholly. More
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