Viola plant profile
Viola cornuta
An annual flower for full sun.
Last updated .
When to plant
When to plant Viola
Horned violet is a cool-season plant. NC State notes it blooms during cooler weather and stops during the heat of summer, and that it makes a good spring companion for tulips, so it is grown for cool-season spring color.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Viola in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Full sun
- Lifecycle
- Annual
Common problems
Watch for these
Also watch for: snails, fungal leaf diseases.
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Viola cornuta (Horned Violet, Tufted Violet)
NC State Extension (North Carolina Extension Gardener Plant Toolbox). Supports general reference. Checked 2026-06-18.