Perfect for adding a burst of color to the fall garden, Colchicum (Autumn Crocus) bears big flowers in shades of purplish-pink and white in September or October. Resembling crocuses with its cup-shaped flowers, it produces its strap-like foliage, way later, in spring. Blooming year after year and getting bigger with age, this flower bulb is ridiculously easy to grow. All parts of this plant are poisonous, therefore it is diligently ignored by hungry deers, rabbits, and other critters.