You are here
The Red List of US Oaks report details for the first time the distributions, population trends, and threats facing all 91 native oak species in the U.S.
Oak decline is a slow-acting disease complex that involves the interaction of biotic and abiotic factors such as climate, site quality and advancing tree age.
Horticultural plants play various and critical roles for humans by providing fruits, vegetables, materials for beverages,and herbal medicines and by acting as ornamentals.
Urbanization is a large driver of biodiversity globally.
Iconic tree species include those native trees that once dominated the typical American city landscape. The American elm and chestnut are the first two that come to mind, and now ash trees are similarly under significant threat of loss.
The history of the Morris Arboretum can be told through its eldest trees. Every scar and abnormality present on these immense specimens inspire awe, enrich visitor experience, and provide a glimpse into the past of the gardens.
This webinar was brought to you by the Natural Areas Association.
Presented by Sarah Wurzbacher, Forestry Extension Educator, Penn State University.
The spotted lanternfly (Lycorma delicatula) is an invasive planthopper native to China, India and Vietnam. It was first discovered in Pennsylvania and has spread to other counties in the eastern United States. This insect has the potential to greatly
Trees planted in cities face many survival challenges, but when they thrive they make our cities healthier, less hot, and more beautiful.
This project offers a blueprint for the ideal level of maintenance needed to keep this area of the garden aesthetically pleasing and well -kept into the future.