Agave maintenance once established. "Agave azul" (blue agave) is used in the production of tequila. In 2001, the Mexican Government and European Union agreed upon the classification of tequila and its categories. All 100% blue agave tequila must be made from the "Agave tequilana" 'Weber's Blue' agave plant, to rigorous specifications and only in certain Mexican states. The hybridized genus ×"Mangave" is created by cross-breeding species of "Manfreda" and "Agave". The ethnobotany of the agave was described by William H. Prescott in 1843: But the miracle of nature was the great Mexican aloe, or maguey, whose clustering pyramids of flowers, towering
Agave eggersiana Agave eggersiana Agave eggersiana, Eggers' century plant, is an endangered species of spiky plant which grows in the Virgin Islands, in dry, exposed areas. "Agave eggersiana" is a perennial herb known in the wild only from the island of St. Croix of the U.S. Virgin Islands (USFWS 1998a). A small number of plants remain on private land and are threatened by tourist development (USFWS 1998b). Other threats include feral pigs and goats on National Park Service land (USFWS 1998b). Research needs include distribution and abundance, general biology and ecology (USFWS 1998a). The U.S. Fish and Wildlife Service requests that any