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 palmeri 1.6–2 inches long and grow on branches in the upper third of the flower spike, which can be between up to 5 m (16.5 feet) tall. The plant requires a large pot but is very tolerant of a wide range of conditions, including temperatures of around –10 °C. Agave palmeri Agave palmeri (also known as Palmer's century plant) is an especially large member of the genus "Agave", in the family Asparagaceae. It is native to southern Arizona, southwestern New Mexico, Sonora and Chihuahua. The plant is also frequently cultivated as an ornamental in other regions. "Agave palmeri" is the largest