Closely related to petunias but having smaller flowers and a much neater habit, varieties of the Calibrachoa species are often erroneously called "Trailing Petunias." They are extremely vigorous annuals that are filled with blooms from spring through summer. They like fertile, well-drained soil and grow 7 inches high with a 6-20-inch spread. Varieties come in blue, pink, coral pink, and white.This plant is superb either in the garden or in containers.