Numerous plants have been introduced to Arizona, and many of them have become invasive species. The following are some of these species: See also Invasive species in the United States External links Non-native, Invasive Plants of Arizona. Howrey, L. D., Ed. University of Arizona Cooperative Extension. USDA PLANTS Database USDA database showing county distribution of plant species in the US InvasiveSpecies.gov Information from the US National Invasive Species Council invasive plants Arizona Environment of Arizona Flora of Arizona Natural history of Arizona