Beech Leaf Disease (BLD) is an emerging and destructive threat to native and ornamental beech trees across North America. This webinar examines the tiny but powerful culprit—Litylenchus crenatae mccannii, a foliar nematode responsible for the disease—and explains how it is identified and diagnosed, how it spreads within and between trees, and what current research reveals about its biology, transmission, and host interactions. Participants will also gain insight into remaining knowledge gaps, the broader ecological impacts of BLD, and the management implications for forest health and landscape professionals working to protect beech resources.

Register By: September 4, 2026  
This event is free of charge. 

Pennsylvania has identified over 250 invasive plants, insects, pathogens, and animals that significantly impact the environment and agricultural production—causing hundreds of millions of dollars in economic losses each year. The Pennsylvania Invasive Species Webinar Series is dedicated to addressing this critical issue. Each session highlights timely topics related to invasive species in Pennsylvania and beyond, including species identification, management strategies, ecological impacts, or key concepts in invasion biology. The series is designed to be accessible to a wide audience. Whether you're a gardener, naturalist, land manager, educator, or simply curious about invasive species, these webinars provide a clear introduction to the issues at hand—no prior knowledge required. By raising awareness and sharing practical information, the series aims to empower communities and spotlight the ongoing efforts of state agencies and partners working to protect Pennsylvania’s landscapes and resources.