Numerous plants have been introduced to the California Floristic Province and within the state's borders. Introduced, Invasive, and Noxious Plants NRCS Invasive Species Policy Invasive Species Executive Order 13112. The following are some of these species: Cal-IPC: California Invasive Plant Inventory Database List, USDA PLANTS Database: California State Noxious Weeds List, Cal-IPC: California Invasive Plant Council homepage, California Native Plant Society—CNPS: Invasive Weeds, PlantRight.org: address and stop sale of invasive garden plants in California, National Invasive Species Information Center: California Invasive Species Lists, https://en.wikipedia.org/w/index.php?title=List_of_invasive_plant_species_in_California&oldid=993163044, Lists of invasive plants in the United States, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 December 2020, at 03:07. The California Invasive Species List Why was the list created? The park has developed a policy to prevent the introduction and spread of non-native plants and is beginning to implement these Best Management Practices. This grass is one of the most invasive wildland pest plants known to California. That grew to two million acres by 1965, and to ten or twelve million by the mid-1990s. California has approximately 3,400 species of native plants, of which 24% are found only in the state (Baldwin et al. Invasive plants tend to out-compete California’s native flora for resources such as space, light, water, and nutrients, are sometimes avoided by animals which can … Asian citrus psyllid. Alligator weed is a plant that has a known presence in the Sacramento-San Joaquin Delta and Feather River. 155-179. plant : grass : limited : n/a (already in CA) Cal-IPC list: Agrostis stolonifera: creeping … When exotic plants begin to colonize natural landscapes, each ecosystem is subject to changes that threaten the integrity and longevity of that system. Originate from: Southeast Asia. The geographic diversity of California has led to broad evolution in native plants. They can overtake crops or rangeland; harm wildlife by eliminating plants they need for food and shelter; clog waterways used for commerce or recreation; and increase fire hazards and flood risk. Click on an accepted name below to view its PLANTS Profile with more information, and web links if available. These invasive plants encroach upon the last bastions of many endangered plant species and could be the final straw driving them to extinction. Mailing: P.O. Around the globe and here in California, invasive plants (usually introduced from other parts of the world) pose serious threats to the Plants may be invasive in some regions of California, and not invasive in others. Ecol Appl 12: 663–67. An invasive species is a species that does not occur naturally in a specific area and whose introduction does or is likely to cause economic (including agricultural) or environmental harm or harm to human health. Invasive plants tend to out-compete California’s native flora for resources such as space, light, water, and nutrients, are sometimes avoided by animals which can cause an increase in pressure on native plants, and can entirely replace natural vegetation communities. Although weeds may have been spread by Spanish livestock during this time, the introduction and spread of invasive plants into California exploded with the flood of human immigration after the discovery of gold in 1848. The adobe brick as a historical source. pages, Habitat Conservation Planning Branch https://en.wikipedia.org/wiki/List_of_invasive_plant_species_in_California For more information on any of the topics above, please contact the Native Plant Program at nativeplants@wildlife.ca.gov. Threatened and endangered species are particularly vulnerable to the pressures of invasive plants. CDFW is temporarily closing its high public use areas, including visitor centers and license counters, to help slow the spread of COVID-19 (coronavirus). Many of them have become invasive species and/or noxious weeds. "Invasive nonnative plants threaten native species with habitat loss, displacement, and severe population declines, thus seriously reducing biodiversity. “Alligator weed is an invasive floating aquatic plant that grows in thick, dense clusters,” Darin said. 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