Antirrhinum is a genus of plants commonly known as snapdragons from the flowers' fancied resemblance to the face of a dragon that opens and closes its mouth when laterally squeezed (thus the snap).
Snapdragons are perennial plants often sold as cold-season annual plants and do best in full or partial sun. They are available in a range of heights: dwarf (6-8 inches), medium (15-30 inches) and tall (30-48 inches). They are plant in a soil that drains well to prevent the roots from rotting.
Snapdragon flowers have a unique, irregular shape and come in shades of yellow, red, pink, orange, bronze, lavender, and white.