I just adore violas. They have self sown in my garden for many years. The little flowers bloom from spring to fall with purple, lavender and yellow faces.
Viola tricolor is a short-lived perennial. The flowers are edible, which makes it a perfect addition to the herb garden. Also called Johnny Jump-Up, Wild Pansy or Heartsease. Hardy in zones 4-9.
height 6"
For sowing instructions and more information, see Viola Seeds.