Public botanical gardens and arboreta are living museums and as such, their core missions
include the collection and display of herbaceous and woody plants from their local region or
from around the world. To fulfil this mission, gardens...

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 recommendations are meant to guide public...

Sarah P. Duke Gardens in Durham, North Carolina has put together a storm preparedness plan in anticipation of more frequent extreme storms. 

The increased hurricane activity predicted for future decades has serious implications for the important work of Montgomery Botanical Center (MBG). The recovery process at and any garden begins immediately following each hurricane, but preparedness is...

This Plan is intended to outline plans for preparing for emergencies and for immediate response and short-term recovery efforts in an emergency. In addition, it contains plans for the security of the Arboretum's living and non-living collections and...

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...

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...

Crop wild relatives, the wild progenitors and closely related cousins of cultivated plant
species, are sources of valuable genetic resources for crop improvement. Persisting gaps
in knowledge of taxonomy, distributions, and...

Urbanization is a large driver of biodiversity globally. Within cities, urban trees, gardens, and residential yards contribute extensively to plant biodiversity, although the consequences and mechanisms of plant cultivation for biodiversity are...

Interception of potential invasive species at ports-of-entry is essential for effective biosecurity
and biosurveillance programs. However, taxonomic assessment of the immature stages
of most arthropods is challenging; characters for...

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...

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. Ongoing conservation efforts exist for some species, but with growing threats and...

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‐...

This publication provides forest resource statistics contributing to the 2020 Resources Planning Act (RPA) Assessment to provide current information on the Nation’s forests. Resource tables present estimates of forest area, volume, mortality, growth,...

Davallia solida (G. Forst.) Sw. (Davalliaceae), Phlebodium aureum (L.) J. Sm. (Polypodiaceae), Phlebodium pseudoaureum (Cav.) Lellinger (Polypodiaceae), and Rumohra adiantiformis (G. Forst.) Ching (Dryopteridaceae) are epiphytic ferns native to the...

A major challenge in articulating human dimensions of climate change lies in translating global climate forecasts into impact assessments that are intuitive to the public. Climateanalog mapping involves matching the expected future climate at a...

To address the growing interest and expressed need for pollinator management strategies a special pollinator symposium was held at the 2017 annual conference of the Natural Areas Association, curated by William Carromero of the US Forest Service and...

Canada is home to about 5087 species of higher plants of which 25% were introduced to Canada either deliberately or by accident. The richness of botanical species is highest in the southern, more densely settled parts of the country. About 364 native...

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...

In a pollen supplementation experiment, fruit or seed production by flowers exposed to natural pollination is compared to that following hand pollination either by pollen supplementation (i.e. manual outcross pollen addition without bagging) or manual...