The genus Alcantarea was named for Brazil's second Emperor, Dom Pedro d'Alcantara and includes both the Odorata and the ever-popular Imperialis. The former is named for its sweet scent, that comes from yellow flowers during the summer. Year round, it boasts pale blue to silver-colored leaves that are spineless and thin. A. Odorata can be an eye-catching addition in many gardens, as it is salt wind tolerant and adaptable to a variety of soil compositions. It thrives in zones 10A-11.