Webster's defines the pansy as a hybridized viola with rounded velvety petals in shades of white, yellow, purple, bronze, rose and maroon. Considered a hardy biennial, pansies grow to a height of 9 inches and spread to about a foot. They love full sun but in central Texas afternoon shade helps them last until early summer. Deadheading (pinching off faded blooms) promotes maximum flower production. The thing I love most is when used as a cool weather annual they can be enjoyed until the roses bloom in spring. The heart shaped blooms with overlapping petals resemble happy little faces. What a pleasure to see them in clusters around the garden!
Other than snapdragons, pansies are an annual that gives you the best bang for your buck.