The first time I saw these little flowers was at the Hummingbird garden at Kartchner Caverns. This garden is a beautiful desert garden. The flowers of Rain lilies remind me of white Crocuses. Blossoms are pure white with bright yellow stamens. Flowers close on shady days and at night. The leaves are thin and grass or onion like. Zephyrantes is taken from the Greek word Zephros, the god of the west wind, and the word anthos, which means flower. As the west wind brings rain the plant flowers after heavy rainstorms in summer. No amount of watering can make it flower. This plant is amazing, it can grow in desert soil and appear only with the monsoon, it can take a good garden soil and grow its grass like foliage happily in the midst of your rose garden and, hard to believe it can grow in a water garden where it is evergreen, but it will only bloom with the rains. Rain lilies are native to Argentine and are now naturalized over much of the world. Rain lilies are easy to grow from seeds. It will take a few years for the plants to produce flowers. It is easier to divide the offset bulbs and plant them. These will grow quickly into blooming size. There are several species available. The most common from Argentine is Zephyrantes candida. A pink variety Z. grandeflora, I grow this one in my rose garden. A yellow variety Z. refugiensis and a Mexican variety, Z. Labuffarosea, with light pink flowers are also available. I grow Z. candida in my pond where its grass like foliage has interest all winter long. The newest version is a hybrid Z.x Prairie Sunset, the flowers fade from apricot to pink. This plant likes more irrigation and stays evergreen all year long, I have not come across this one yet. I think it is really worth it to try one or two of these species in whatever condition you can provide.