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 filifera Agave filifera Agave filifera (thread agave) is a species of flowering plant in the family Asparagaceae, native to Central Mexico from Querétaro to Mexico State. It is a small or medium sized succulent plant that forms stemless rosette up to 3 feet (90 cm) across and up to 2 feet (60 cm) tall. The leaves are dark green to a bronzish-green in color and have very ornamental white bud imprints. The flower stalk is up to 11.5 feet (3,5 m) tall and is densely loaded with yellowish-green to dark purple flowers up to 2 inches (5 cm) long. Flowers appear