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In 2008, Denver Botanic Gardens initiated demographic monitoring of Sclerocactus glaucus, a small ball cactus found only in western Colorado. The cactus had been listed as threated on the Endangered

The City Nature Challenge is a yearly event for folks in cities all over the world to observe and document biodiversity in their own backyards. To participate, people make observations of any organism

On April 10, the U.S. Fish and Wildlife Service (Service) announced a proposed rule to remove Sclerocactus glaucus, a small barrel cactus found in the Colorado and Gunnison River Basins in Western

Sarada Krishnan, Ph.D., is a singular figure in horticulture worldwide. Denver Botanic Gardens has benefitted from her expertise, talent and vision for 16 years as she led not only a team of

Did you know that more than 1350 species in the US are protected under the Endangered Species Act? A whopping 792 (57%) of them are plants. Today is the sixth annual Endangered Species Day, a day to

Denver Botanic Gardens and University of Denver (DU) are currently collaborating to conduct research that documents climate change effects on native flora in Colorado. We have been using preserved specimens from the Gardens Kathryn Kalmbach Herbarium and other regional herbaria to determine if flowering time has changed over the last 100 years. A preserved plant with reliable label data is proof positive that it existed in a specific place at a specific time in the state it is shown.