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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.
In 2012, more than two million acres of important sage-brush habitat burned in four Western States.
Earth has daunting climatic and socioeconomic challenges. Gardens wish to do their part in preserving biodiversity, but best practices are essential when working with and protecting wild populations.