About the Ash Tree Crisis:
In early 2022, Tyler Arboretum identified the devastating impact of the Emerald Ash Borer (EAB) on its 550 acres of natural areas. Nearly 1,600 ash trees became hazardous, forcing the closure of our trails to ensure visitor safety. Since then, Tyler has worked tirelessly to address this challenge while restoring and revitalizing the affected areas.
Our Response
- Tree Removal Efforts: Began in 2023 using forestry mowing, mechanized harvesting, and arborist techniques, with careful attention to wildlife habitats and erosion control.
- Funding Support: This $500,000 project has been supported by reserves, private donations, and a grant from Pennsylvania’s Department of Conservation and Natural Resources (DCNR).
- Restoration Plans:
- In Spring 2025, Tyler Arboretum was chosen as one of only three sites in Pennsylvania to participate in a USDA biological control program to release parasitoid wasps. Read this article to learn more.
- Efforts are underway to monitor invasive species and prepare for replanting native trees beginning in Fall 2026.
Emerald Ash Borer (EAB): The Cause of the Crisis
What is EAB?
- A destructive beetle native to northeast Asia, the Emerald Ash Borer was first detected in the U.S. in 2002. Its larvae feed on the inner bark of ash trees, disrupting their ability to transport water and nutrients.
- 99% mortality rate for affected ash trees within 3-4 years.
- Over 36 states impacted, resulting in billions of dollars in damages.
- Devastating ecological effects, as all native North American ash species are at risk.
Why Not Treat the Trees?
- For a large area like Tyler Arboretum, chemical treatments were not a feasible solution due to cost and scale. Promising biological control programs, like the use of parasitic wasps, are still in early stages.
For more in-depth information, visit:
Frequently Asked Questions (FAQ)
Did Tyler Sell the Wood?
No. The market for ash wood is saturated due to widespread EAB damage, making sales unfeasible. Instead, Tyler worked with contractors to remove and grind large quantities of debris.
What About Other Threats?
In addition to EAB, invasive pests like the Hemlock woolly adelgid threaten other tree species. Tyler is closely monitoring these issues to protect our natural areas.
Looking Ahead: Stewardship and Restoration
Tyler Arboretum is committed to creating a healthier, more resilient natural environment:
- Trail Stabilization: Ongoing work to ensure safe, sustainable access for visitors.
- Educational Outreach: Programs highlighting the importance of pollinator preservation and native plant ecosystems.
- Replanting Efforts: Large-scale tree planting projects planned for Fall 2025.
Join Us in Restoring Tyler Arboretum:
Visit Us Today:
Explore the beauty of Tyler Arboretum’s open trails and witness the progress being made firsthand.