Common Name: horned violet
Type: Herbaceous perennial
Family: Violaceae
Native Range: Pyrenees
Zone: 6 to 11
Height: 0.50 to 0.75 feet
Spread: 0.50 to 1.00 feet
Bloom Time: April to June
Bloom Description: Blue, violet, lavender (bicolors)
Sun: Full sun to part shade
Water: Medium
Maintenance: Medium
Suggested Use: Annual
Flower: Showy, Fragrant
Attracts: Butterflies
Tolerate: Deer, Black Walnut
Culture
Species plants are typically grown as perennials (winter hardy to USDA Zones 6-9), but may be grown as biennials/annuals in somewhat the same manner as pansies (see Viola x wittrockiana). They are easily grown in humusy, evenly moist, well-drained soils in full sun to part shade. Best in part shade in St. Louis. If flowering declines with the onset of hot summer weather, cut back plants to promote a possible fall rebloom.
Noteworthy Characteristics
Viola cornuta, commonly called horned violet or tufted violet, is a tufted perennial that grows to 6-8” tall and spreads by creeping, ascending stems to 12” wide. It is native to Spain and the Pyrenees. Small, fragrant, slender-spurred, pansy-like flowers (to 1.5” across) with spreading petals bloom in spring and summer. Flowers are mostly two-toned in shades of blue, violet and lavender. Cultivars expand the available colors to include shades of yellow, apricot, red and white. Round-toothed, ovate, evergreen leaves are subtended by large stipules.
Genus name comes from the Latin name for various sweet-scented flowers.
Specific epithet means horned.
Problems
No serious insect or disease problems. Susceptible to fungal leaf diseases. Watch for slugs and snails.
Uses
Borders, woodland gardens for plants grown as perennials. Bedding, window boxes and containers for plants grown as annuals.