Snapdragons (Antirrhinums), whose flowers were considered to resemble the face of dragons opening and closing their mouths, are found in cold, rocky areas of the United States, Europe and North Africa. Popular in gardens, Snapdragons are cultivated from tropical to temperate zones and require full or partial sun and regular rain or watering. Cultivars have white, crimson, or yellow flowers with two lips. Snapdragons are classified as dwarf (6-8 inches), medium (15-30) inches) or tall (30-48 inches). Cultivated on rocks, in containers or utilized as bedding, Snapdragons form beautiful, herbaceous borders.