Penn State Extension

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Do Lichens Cause Harm to Trees?
Do Lichens Cause Harm to Trees? - Videos Videos

Do Lichens Cause Harm to Trees?

Scott Weikert

3:50

Lichens are often thought to be a pest or disease to trees and shrubs. More
Kiln Drying of Hardwood Lumber
Kiln Drying of Hardwood Lumber - Workshops Workshops
This introductory short course is designed to enable participants to dry hardwood lumber to maximize product quality and value. More
A Guide to Preserving Trees in Development Projects
A Guide to Preserving Trees in Development Projects - Articles Articles

A Guide to Preserving Trees in Development Projects

William Elmendorf, Ph.D., Henry Gerhold, Ph.D., Larry Kuhns

This publication explains tree health and environmental considerations and details how to preserve trees. More
Why Does Lumber Need to be Dried?
Why Does Lumber Need to be Dried? - Videos Videos

Why Does Lumber Need to be Dried?

Scott Weikert

9:01

After lumber is sawn from the log it must be dried before it can be put into use. The forest products industry spends a lot of time and money to dry lumber and this video explains the reasons why. More
Landscape Tree Factsheets
Landscape Tree Factsheets - Guides and Publications Guides and Publications

Landscape Tree Factsheets

Henry Gerhold, Ph.D.

456

$30.00
Select trees for planting in your towns and cities. More
Forest Landowners and Natural Gas Development
Forest Landowners and Natural Gas Development - Articles Articles

Forest Landowners and Natural Gas Development

David R. Jackson, Margaret C. Brittingham, Ph.D., Scott Weikert, James Finley, Ph.D.

Before signing a lease on your forestland, there are many things to consider to protect your interests. More
Pruning Landscape Trees
Pruning Landscape Trees - Articles Articles

Pruning Landscape Trees

William Elmendorf, Ph.D., Henry Gerhold, Ph.D.

Proper pruning of landscape trees improves their structural strength, maintains their health, enhances their beauty, and increases their value. More
Topping trees results in large areas of decay and fast-growing, weak, and unattractive watersprouts.
Don't Top Trees - Articles Articles

Don't Top Trees

William Elmendorf, Ph.D., Henry Gerhold, Ph.D.

This article explains the dangers of tree topping and what measures should be taken to prevent them. More