Agave tequilana planting these shoots; this has led to a considerable loss of genetic diversity in cultivated blue agave. It is rarely kept as a houseplant, but a 50-year-old blue agave in Boston grew a stalk requiring a hole in the greenhouse roof and flowered in the summer of 2006. Tequila is made only from a specific cultivar of "Agave tequilana" called 'Weber Azul'. This cultivar is larger and blue-gray in color compared to the smaller and green normal "A. tequilana". It is a rapid grower and prolific offsetter in keeping with its agricultural advantages. Tequila is produced by removing the heart
Agave any species known in the wild, although this may simply be due to the differences in growing conditions in Europe. Some commonly grown species include "Agave americana", "Agave angustifolia", "Agave tequilana", "Agave attenuata," "Agave parviflora", "Agave murpheyi", "Agave vilmoriniana", "Agave palmeri", "Agave parryi" and "Agave victoriae-reginae". One of the most familiar species is "Agave americana", a native of tropical America. Common names include century plant, "maguey" (in Mexico), or American aloe (not related to the genus "Aloe"). The name "century plant" refers to the long time the plant takes to flower. The number of years before flowering occurs depends on