There is a violet for every situation. A sure bet for a violet that will do well in many landscapes would be the Common Blue Violet. It blooms in early spring through early summer. And the attractive heart-leaved foliage stays green all summer.
Season: Perennial USDA Zones: 6 - 9 Height: 6 - 8 inches Bloom Season: Spring through fall Bloom Color: Purple Environment: Full sun to partial shade Soil Type: Well-drained, pH 5.8 - 6.8