Protecting Young Trees:
The Natural Barrier Approach

The Impact of Deer on Forest Regeneration

OH DEER! Maybe you have had a browsing problem of your own with landscaping around your home, farmers with crop damage, or in this case the lumber industry. After a timber harvest, white-tailed deer often negatively impact forest regeneration. Deer damage and eat tree seedlings, preventing regrowth.

The Challenge of Traditional Fencing Methods

Sometimes, people use a temporary fence to protect newly harvested areas and stop deer from eating. It can be electric or woven wire. These types of barriers can be expensive and require significant maintenance.

Exploring Natural Barriers: Cornell University's Research

Cornell University began studying the use of slash walls in the Arnot Forest in Western New York in 2017. This study's purpose was to find a more effective method for newly harvested areas. Barriers are necessary for around ten years or until young trees grow to a height of six feet.

Defining Slash Walls: A Cost-Effective and Ecological Strategy

We can define slash walls as the dense accumulation of low-value treetops at the perimeter of a harvest. Preliminary findings suggest that this natural barrier method may provide a cost-effective and ecologically desirable strategy to protect seedlings.

In addition, slash walls supply habitat for many forest friends. From squirrels to black bears, slash walls offer shelter that traditional fences cannot provide.

Dwight Lewis Lumber Company's Initiative

In late 2022, Dwight Lewis Lumber Company, Inc. in Hillsgrove started a case study to create Pennsylvania's first slash wall. They closely followed the research on slash walls and have affiliations with Lewis Lumber Products and Hardwood Rack.

The study will compare the regrowth of woven wire fencing areas with slash wall areas on certified land. To date, the results have been impressive.

We aim to use natural walls to enhance tree growth, increase tree diversity, and support a healthy forest ecosystem for animals. To learn more, contact us today.

Authored by Stephanie Phillips-Taggert, Executive Director of Keystone Wood Products Association.

Photo credit: Steven Roberge, UNH Cooperative Extension