The Ipomcea is an extensive genus, having over four hundred species of twining or creeping plants whose campanula or salver-shaped blossoms are of all shades of purple, red, blue or white. They are among the prettiest of plants for covering the limbs of old trees, trellises, veranda pillars, etc. All of the species may be easily raised from seeds which should be sown in early Spring, one eighth of an inch deep in four-inch pots filled with good loam mixed with about one-third sand; sow three seeds in each pot and place the pots in a warm place under glass. When the young seedlings are about six inches high they should be tied to small temporary stakes and gradually hardened by exposure to the open air; after two weeks' exposure to the open they are ready to be planted out.