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A weed that has been spreading in recent years in the nursery and landscape trade is mulberry weed.

Discover nut trees that thrive in Pennsylvania with Emelie Swackhamer. Learn about species, pests, and the Pennsylvania Nut Growers Association in this engaging webinar.

When summer temperatures climb, it is extremely important that employers and workers become familiar with the signs, symptoms, and dangers of heat illness.

As the forsythia comes into full bloom and dandelions show their beauty, one thing is certain; spring is upon us.

Become a Tree Tender and help increase the tree canopy in your community!

Oriental bittersweet (Celastrus orbiculatus) is an invasive, perennial, woody vine. This article includes images for identification and recommendations for control.

English ivy is an evergreen with dark green older foliage that has white veins, while new growth is a lighter green color.

Learn to care for boxwoods, explore alternative shrubs, and create a holiday centerpiece using boxwood cuttings in this hands-on Master Gardeners workshop.

Invasive species have drawn considerable regional and national attention in recent years.

Japanese barberry (Berberis thunbergii) is an invasive, non-native woody plant that can grow 3 to 6 feet tall with a similar width.

Learn to manage landscape plant and turfgrass pests with expert instruction, pest identification, and horticultural best practices at this all-day workshop.

Learn the distinguishing characteristics of the invasive tree-of-heaven that you can use to accurately identify it.

Learn about selected native trees, shrubs, and forbs that can enhance habitat in various sites within home landscapes. Hopefully, you'll be inspired to go learn more about landscaping with natives!

The eastern tent caterpillar has been observed in the United States since 1646. Outbreaks frequently occur at eight to ten year intervals.

Araneus saevus is found from Canada into the northern United States. It can be seen in forested areas and suburbia with mature landscape plantings.

Camphor shoot borers are an introduced species of ambrosia beetle that attack small-diameter branches and trunks of stressed, weakened, and dying trees. They also accidentally bore holes into plastic gasoline containers, hoses, and tanks.

Ornamental plantings of holly in Pennsylvania are often damaged by leafmining pests. The native holly leafminer only feeds on the foliage of American holly.

Strengthen your arborist skills with training in tree biology, care, and risk management while preparing for the ISA Certified Arborist exam.

Lichens are often thought to be a pest or disease to trees and shrubs.

La comunicación es un factor importante en la eficiencia de la operación de cualquier lugar de trabajo.

Mimosa webworm can cause unsightly browned foliage on honeylocust, but typically has minimal impact on tree health.

There are several situations that can trigger root problems and death of your new plant. Using preventative or correctional measures will help to ensure your plant thrives.

Landscape fabric is often used in ornamental landscapes as a method to block weed growth permanently.

Penn State Extension Master Watershed Stewards Host Sixth Annual Native Tree and Shrub Events to Promote Healthy Watersheds. Now accepting orders!

Root rots of floricultural and woody ornamental crops are one of the most important causes of crop loss.