When we visited Haleakala National Park on Maui we were hoping to see this plant, the Silversword, in bloom. It grows at the 10,000 ft summit of the Haleakala volcano, above the treeline. The white hair on the succulent-type leaves protects the plant from the intense sunlight. After growing for an average of 12 years, these plants send up one giant flower stalk, which can be up to 6 ft tall, and then they die. This one, near the visitor center, was the only accessible one that bloomed this year.