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 shawii Agave shawii Agave shawii, with the common names coastal agave or Shaw's agave, is a very rare and critically endangered species in the genus "Agave" native to southwestern California and Baja California. The plant is named for Henry Shaw, the founder of the Missouri Botanical Garden. The plant is native to California coastal sage and chaparral habitats, along the Pacific Coast of northern Baja California state of Mexico and southwesternmost San Diego County of California. It is much more common in the wild in Baja California than in San Diego County, where urban development has essentially wiped out the plant's