The Monarch butterfly eastern population (Danaus plexippus) is in decline primarily due to habitat loss. Current habitat restoration programs focus on re-establishing milkweed, the primary food resource for Monarch caterpillars, in the central United...

The Morton Arboretum has released the results of its 2020 Chicago region tree census. Findings include the loss of an estimated 6 million ash trees, felled by the emerald ash borer. Chicago's canopy cover decreased from 19% to 16%, largely because of...

Results are in from one of the most significant studies ever completed on Delaware’s bees. From 2018-2019, Mt. Cuba Center partnered with Matthew J. Sarver of Sarver Ecological to scientifically measure which species of bees were attracted to our...

This report brings together the most current knowledge of soil life and how it supports nature and humanity. More than 300 scientists contributed to the report, which provides an overview of soil biodiversity, its contribution to supporting ecosystems...

This report describes the first phase of an examination of some of the nation’s needs for
native plant seeds (a shorthand term to include all forms of native propagative plant material)
and of the capacity to meet those needs. Across the...

In 2018, the Mid-Atlantic Regional Seed Bank (MARSB) and the University of Maryland
Extension conducted an internet survey of the native plant and seed user community throughout
the Eastern United States. The authors developed an...

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...

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. using the IUCN Red List threat assessment platform, including updated versions of previously...

An Urban Tree Canopy (UTC) assessment, which provides a measure of a community’s tree canopy cover, is important for understanding the extent of a community’s forest or tree resource. UTC assessments are often used for establishing and implementing...

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:

• Ask them to cosponsor H.R. 1572 The Botanical Sciences and Native Plant Materials Research,
...

The American chestnut, whitebark pine, and several species of ash in the eastern United States are just a few of the North American tree species that have been functionally lost or are in jeopardy of being lost due to outbreaks of pathogens and insect...

The purpose of a Natural Areas Land Management Plan for the Matthaei Botanical Gardens and Nichols Arboretum is to create a forward-focused systematic document that covers the most essential topics for land management. The ecological history of...

NYC’s forested natural areas provide important benefits to the city including high-quality recreation, enhanced biodiversity, and improved air and water quality. The Natural Areas Conservancy (NAC) and the New York City Department of Parks and...

This edition (Spring 2011) of the Landscape Management Plan is the result of the continuing work of the Horticulture Department of the Arnold Arboretum. It is a detailed game plan that communicates the shared goals and priorities collectively developed...