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 parviflora pollinated by bees such as bumblebees. This species is the smallest agave in Arizona and is sought by collectors. For this reason the species has declined in its native habitat. There are only about two dozen natural populations in Arizona. Other threats to the species include road construction and mining. The plant is valued in cultivation and has gained the Royal Horticultural Society's Award of Garden Merit. Subspecies of the plant include ssp. "parviflora" and ssp. "densiflora". Agave parviflora Agave parviflora is a species of succulent perennial flowering plant in the asparagus family, known by the common names Santa Cruz