These seeds were collected from Puya alpestris, also known as Sapphire Tower, and Bromeliad. This tropical succulent likes to live in full sun where it grows to about 2 feet high. The green and blue blossoms are open for a month or two in early spring and they attract many different birds, bees, and butterflies. Hummingbirds love this flower. USDA Hardiness Zones 9 to 11.