Double early tulips and double late tulips--early and late refer to their bloom times--have extra petals that make them look very different from traditional, cup-shaped tulips. Double early tulips are dwarf types that produce large, bowl-shaped flowers on short, strong stems that withstand early spring's drenching showers. Their dazzling colours look fabulous in beds and borders, and they perform well when forced in pots indoors. Double late tulips are commonly called peony tulips or peony-flowering tulips because their breathtaking, fully double blooms resemble those impressive flowers. They are naturally long lasting, opening for about two weeks--about double the length of most tulips.