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Information on choosing, planting, growing and maintaining trees and shrubs, including evergreens, walnut, butternut, and hickory trees. Tips on home orchard site selection, pruning, disease control and using trees for privacy.

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Pruning for Professionals
Pruning for Professionals - Workshops Workshops

Pruning for Professionals

03/22/2018

Scranton, PA

$40.00
Landscape professionals are invited to join us and learn the fundamentals of pruning shrubs and small trees in the landscape. More
Tree Tenders® Online Training
Tree Tenders® Online Training - Webinars Webinars

Tree Tenders® Online Training

Multiple Options Available

From: $35.00

Join thousands of other concerned citizens and become one of the over 5,000 trained Tree Tenders® and help increase tree canopy cover in your community. More
Frost damage on ash
Will My Woody Plants Recover from Freeze Damage - Articles Articles
When we have unusually high temperatures in early spring, many woody trees and shrubs will break bud and leaf out or flower early. 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
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
Black walnut fruit. Photo: K. Salisbury, Penn State
Working With the Black Walnut - Articles Articles
Black walnut is one of the last trees to leaf out in the spring and one of the first to lose its leaves in the fall. 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
Handling and Planting "Bare Root" Plants in the Home Landscape
Handling and Planting "Bare Root" Plants in the Home Landscape - Articles Articles
How to choose and get the best results from 'bare root' trees, shrubs, and other perrenials. More
Winter is a Great Time to Examine Your Trees and Prune Them
Winter is a Great Time to Examine Your Trees and Prune Them - Articles Articles
Winter is the perfect time to evaluate your trees' branch structure while the leaves are off the tree and not blocking your view to the interior of the canopy. More
Landscaping and Gardening Around Walnuts and Other Juglone Producing Plants
Landscaping and Gardening Around Walnuts and Other Juglone Producing Plants - Articles Articles
Walnuts and hickories produce the chemical juglone (5 hydroxy-1,4- napthoquinone), which is exuded from all parts of the plant. More
Using Trees and Shrubs for Privacy and Wind Screening
Using Trees and Shrubs for Privacy and Wind Screening - Articles Articles

Using Trees and Shrubs for Privacy and Wind Screening

Emelie Swackhamer, Jim Sellmer, Ph.D.

Residences benefit from trees and shrubs planted specifically to block unwanted views or prevailing winds. More
Trees, Shrubs, and Groundcovers Tolerant of Dry Sites
Trees, Shrubs, and Groundcovers Tolerant of Dry Sites - Articles Articles
Dry soil can exist when there is simply not enough water to supply plant roots in a growing area. More
Shade Tolerant Trees, Shrubs, and Groundcovers
Shade Tolerant Trees, Shrubs, and Groundcovers - Articles Articles
Most plants grow best in full sunlight and all plants need some light to survive. More
Introduction to Creating Healthy Landscapes
Introduction to Creating Healthy Landscapes - Articles Articles

Introduction to Creating Healthy Landscapes

Emelie Swackhamer, Larry Kuhns

When a plant looks unhealthy or has been injured by an insect or a mite, often our first impulse is to apply a pesticide. More
Choosing Plants Wisely
Choosing Plants Wisely - Articles Articles

Choosing Plants Wisely

Emelie Swackhamer, Larry Kuhns

To create and maintain a healthy landscape, choose plants that are suited to the conditions in your yard. More
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