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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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9/15/21
Focus on Sustainability Current Webinar Recordings

Available to Members Only

A Focus on Sustainability is a collaborative series between the Ecological Landscape Alliance, Chesapeake Conservation Landscaping Council, ReScape, Deep Roots Kansas City, and the American Public Gardens Association....

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2/11/21
2020 November Plant Conservation Alliance Meeting

Dr. Kay Havens, Chair of the PCA Non-Federal Cooperators Committee, will briefly report on the "Assessment of Native Seed Needs and Capacities" being conducted by the National Academies of Sciences, Engineering, and Medicine, including the phase 2 data...

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12/8/20
What's My Tree Worth? Tree Appraisal Case Studies

Lindsey Purcell, Urban Forestry Specialist – Purdue University, as he outlines examples and case studies regarding tree appraisal in the urban environment. 

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12/4/20
Focus on Sustainability Archived Webinars

A Focus on Sustainability is a collaborative series between the Ecological Landscape Alliance, Chesapeake Conservation Landscaping Council, ReScape, Deep Roots Kansas City, and the American Public Gardens Association. Focus on Sustainability webinars...

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10/7/20
Wild Plants and You in the Times of COVID19 and the Essential Journey to Sustainability

With the current global spotlight on wild animal markets as a possible source of the COVID-19 epidemic, it is easy to forget that the biggest flows of “wildlife” in trade involve plants, not animals. This report summarises what is known about the trade...

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6/19/20
TIPS Community Webinar: PlantSnap Initiative

The Association's TIPS Community presents a "Technology Tuesday" on the Association's PlantSnap Initiative featuring PlantSnap founder Eric Ralls. Find out how your garden can participate in this exciting citizen science project.

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12/4/19
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
Lean on Me: Recommendations for Heritage Tree Support at the Morris Arboretum

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. They also act as living...

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9/16/19
Intersecting urban forestry and botanical gardens to address big challenges for healthier trees, people, and cities

Improving urban forests is one of the solutions to achieving several of the United Nations Sustainable Development Goals and making cities healthier and more livable for people. Priority should be given to protecting mature trees and promoting long‐...

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7/15/19
Madison Square Park Tree Conservation Plan: A Canopy for the Future

This tree plan, not only comprises a history of trees that once stood in the Park and catalogues the trees currently standing, but also directs the succession and maintenance of the tree canopy that future generations of Park users will enjoy. As we...

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12/13/18