Violas belong to the same family as pansies, and thus have similar growing requirements. Although classified as a perennial, their production is so reduced in the second year that most people treat them as annuals. In warmer climates, they can be planted in the fall. Due to their appearance, they could easily be confused with pansies. However, their blossoms are smaller and they only grow to a height of seven or eight inches.
Select a sunny or partly shady location. Violas don't tolerate heat very well, so it is best if they are shaded during the hottest part of the day. Although they can be grown from seed, they are readily available in flats of established plants. In colder climates, wait until any danger of frost has passed. Simply set them into the ground at the same depth as their dirt enclosure. Space them about six inches apart and they will fill in nicely. Water them after planting, and keep them watered during dry periods. By removing the dead flowers (deadheading), you will encourage the plant to produce more blossoms.