See All Trees and Shrubs

Connect with green industry experts at this event featuring research, techniques, and tools for success. Earn credits, attend diverse sessions—including Spanish-language—and enjoy an arboretum tour.

Prepare for the Pennsylvania Department of Agriculture’s certified pesticide applicator exam while learning safe, effective, and environmentally responsible pesticide use practices.

Learn pruning theory and techniques for shrubs and small trees through a morning classroom session and an afternoon hands-on field experience.

The Arborist Short Course is a four-day workshop designed to increase working tree knowledge and prepare participants for the ISA Certified Arborist exam.

Annual sowthistle (Sonchus oleraceus) is one of the annual thistles.

Cornus mas blooms on bare branches in March, with leaves following a bit later.

Are you looking for a weeping tree? Or maybe you need an upright grower to 25 feet tall, or one that will top out at 8-10 feet?

Living in the humid mid-Atlantic area, we have lots of fungal and bacterial diseases to contend with.

Learn the fundamentals of tree maintenance and how to safely climb trees during this in-person event.

Eastern redbud (Cercis canadensis) is a small, graceful tree native to the eastern and central United States.

American yellowwood, Cladrastis kentukea, is a great shade tree and a lovely flowering tree.

My neighbor came up to me last month and told me he was sorry that my tree had died. I was puzzled, because I was not aware that any of my trees had died.

Picturesque may be the first word that comes to mind when describing the Japanese white pine, Pinus parviflora.

Oak wilt is not known east of the Susquehanna River in Pennsylvania. In 2021, there was a suspected case on the border of Chester and Delaware counties that has since been discredited.

Glyphosate is the active ingredient in non-selective, systemic herbicides sold under various trade names – Roundup, Accord, Glypro, and many others.

Poison hemlock (Conium maculatum) appears to have become more abundant over the past few years.

Getting to the bottom of a plant problem can be a challenge.

Extension professionals and pesticide industry representatives consistently reminded growers to read the pesticide label thoroughly and observe all precautions listed on the label.

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.