The species of most use to the florist is gracilis, which has slender growth with pretty white and light purple flowers. They were formerly used sometimes for flower beds or long ribbon borders, but are more valuable as vase plants, for which their graceful but free growth and free flowering qualities are well adapted. They cannot be called drooping plants, yet their slender but wiry growths have a fine effect in the edge of a vase or veranda-box.
Any good loam will grow them. Lift a few plants in fall and cut back hard, and keep in a cool, light house. In January start with a little heat and you will get plenty of cuttings. Or if you prefer, take off some cuttings in the fall, but they don't root freely unless the cuttings are of recent growth.