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Ash tree species in North America are under mortal threat from the Emerald Ash Borer (EAB), now in 35 states and five Canadian provinces.
The purpose of these guidelines is to provide a consistent methodology for public garden staff to develop and categorize a list of cultivated taxa observed escaping from their locations of cultivation.
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.
Oaks are critical to the health and function of forest and shrubland habitats in the United States, but many native oaks are threatened with extinction in the wild.
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.
Contact your elected representatives and let them know how you feel about plants, our web of life, and the ecosystem services we all depend upon:
Building upon an initial 6000+ cities committed to GCoM at the time of the signing of the Paris Agreement, cities continue to make significant and ambitious commitments to meet the climate challenge.
In the Tropical Andes millions of people depend upon the use of wild and domesticated
biodiversity for their livelihoods, but the complex interactions between the
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.
The impacts of climate change are already being felt in communities across the country.
More frequent and intense extreme weather and climate-related events, as well as changes