The California Native Plant Society (CNPS) is a California environmental non-profit organization (501(c)3) that seeks to increase understanding of California's native flora and to preserve it for future generations. The mission of CNPS is to conserve California native plants and their natural habitats, and increase understanding, appreciation, and horticultural use of native plants throughout the entire state and California Floristic Province. History California Native Plant Society was founded in 1965 by professional botanists and grassroots activists who, after saving an important native plant garden in Berkeley's Tilden Regional Park, were inspired to create an ongoing organization with the mission to save and promote the native plants of California. Structure For 50 years, professional CNPS staff and volunteers have worked alongside scientists, government officials, and regional planners to protect habitats and species, and to advocate for well-informed environmental practices, regulations, and policies. The organization works at the local level through the various regional chapters, and at the state level through its five major programs, board of directors, Chapter Council, and state office. CNPS continues to be a grassroots organization, with nearly 10,000 members and volunteers in 35 chapters covering the state of California and northwest Baja California. Chapter volunteers promote CNPS’s mission to conserve California’s native plants and their natural habitats, and to increase the horticultural uses of native plants at the local level. Membership is open to everyone, and chapter activities ranging from field trips, restoration activities, meetings, symposia, public garden maintenance, plant sales, and more are open to the public. At the state organizational level, CNPS has five core programs in Conservation, Rare Plant Science, Vegetation Science, Education, and Horticulture. Each program has dedicated CNPS staff supported by volunteer committees consisting of experienced botanical experts, conservation advocates, professionals, educators, and community activists. Activities Chapters of CNPS organize many events of local significance. In keeping with the public outreach and education mission of the society, these events are generally free and open to the public. Wildflower shows Native garden tours Native plant sales in spring and fall General public program meetings Lectures, talks, and workshops Public demonstration gardens Local restoration projects Field trips Local publications CNPS maintains the online Inventory of Rare and Endangered Plants, or Inventory, which catalogs the California Rare Plant Ranks (known as "CNPS Lists" prior to 2010). The Inventory and its ranking system remain the most widely adopted source of information about California’s special rare plants