The Tillandsia houston air plant is very striking and almost "glows" with its green and silvery appearance. One of the larger sized Tillandsia, the houston air plant's leaves turn a silvery/purple color when starting the blooming process. As the plant continues to mature, its stiff leaves start to curve out in dramatic fashion. Once blooming, the houston will display amazingly delicate pink and white blooms. The plant grows fast and can produce a clump of offsets in a relatively short amount of time.