Agave americana
Agave americana – a durable, greenish-blue plant. After 8-10 years it creates an upright and very tall (8-9 m) stem with numerous, small, yellow flowers. Flowering takes 2-3 months. After the flowers die, the plant itself dies. It grows on weak soil and rocky areas. It must be protected from frost in the winter and stored at 4-6 ° C.