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Can an ambitious breeding effort save North America’s ash trees?

Since a devastating fungal blight popped up in the Bronx Zoo in 1904 and went on to kill at least 3 billion chestnut trees, North American forests have been swept by one plague after another, including a fungus that kills elms and an aphidlike insect...

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12/30/20
Bartlett: Needle Diseases of Conifers

Needlecast and needle blight are terms applied to a variety of foliage disorders of many coniferous species. These diseases are usually more severe on young trees or on trees growing outside of their natural range. Disease severity and corresponding...

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2/10/20
Lightning Protection for Trees

Thousands of trees are struck by lightning every year. These trees will have varying degrees of damage ranging from complete shattering and destruction of the tree, to a slow lingering death, to virtually no apparent damage at all (Figure 1). When...

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12/12/19
Public Gardens as Sentinels Against Invasive Species

From the American Public Gardens Association Plant Collections Management Symposium. Thursday, October 18, 2018 from Vancouver, Canada.

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10/17/19
Oak decline in the United States

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. Oak decline occurs more commonly among red oak species, but white oaks are susceptible as...

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10/14/19
Spotted Lanternfly: What Natura Areas Professionals Should Know about this New Invasive Insect

This webinar was brought to you by the Natural Areas Association.

Presented by Sarah Wurzbacher, Forestry Extension Educator, Penn State University.

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9/13/19
Impact of Significant Weather Events on Plant Death in Managed Landscapes

Intensively managed landscapes, like those found in many public gardens, attempt to mitigate the impact of significant weather events through irrigation, improving soil characteristics, and mulching. At the same time many gardens purposefully push the...

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7/9/19
Shifts in the Abiotic and Biotic Environment of Cultivated Sunflower under Future Climate Change

Sunflower is a unique model species for assessing crop responses and adaptation to climate change. We provide an initial assessment of how climate change may influence the abiotic and biotic environment of cultivated sunflower across the world. We find...

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2/27/19
Native Vegetation Investments Pay Conservation Dividends

Viewers will learn about native vegetation’s applicability to a myriad of conservation practices beyond wildlife uses through an exploration of the supporting scientific research applied throughout the tall grass prairie and southeastern grasslands...

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3/16/18