Violet

Growing Conditions

Growing Zones

Thrives in USDA Zones 3 - 9

Companion Planting

When to Plant

• Start Indoors

  Cold-stratify seed 60–90 days before last frost, then surface-sow indoors 8–10 weeks before transplanting

• Transplant

  Set out in early spring when soil is workable, or in fall for spring establishment

• Direct Sow

  Surface sow in fall for natural cold stratification; or cold-stratify seed for 60–90 days before spring sowing

• Harvest

  Harvest young leaves and flowers in spring for salads; flowers can be candied or used as garnish; do not harvest from roadsides or treated lawns

Organic Growing Tips

• Allow to naturalize in lawn edges and under trees; it is remarkably resilient and fills in bare patches.

• Cleistogamous (self-fertilizing) flowers produced in summer seed prolifically without opening.

• Leave patches unmowed in spring to support emerging native bees and fritillary eggs.

• Violet leaves make an excellent vitamin-rich spring green cooked like spinach or added to smoothies.

Common Pests

• Aphids
• Slugs
• Violet Sawfly

Taxonomy

Kingdom

Plantae

Family

Violet family (Violaceae)

Genus

Viola

Species

Viola sororia

Natural History

Viola sororia, the common blue violet, is native to the eastern and central United States and southern Canada, where it colonizes moist woodland edges, meadows, and disturbed ground from Manitoba to Florida. The genus name Viola derives from the classical Latin and Greek names for the plant, well known in ancient Mediterranean gardens, but V. sororia itself is distinctly North American. It produces two flower types: showy spring blooms that attract early pollinators, and cryptic summer cleistogamous flowers that self-fertilize underground-style without opening, ensuring prolific self-seeding independent of pollinators. This dual reproductive strategy is a key reason the plant naturalizes so persistently once established in a garden.

Traditional Use

Several Indigenous peoples of eastern North America recorded uses of Viola species leaves and roots in poultices and infusions. European settlers incorporated violet flowers and leaves into culinary and folk medicine traditions borrowed partly from Old World Viola odorata practices. Violets appear in European herbals including John Gerard's 1597 Herball, where the flowers were noted for their cooling and moistening qualities according to humoral theory.

• Ojibwe and other eastern Woodland peoples, documented by ethnobotanist Huron Smith in the 1920s–30s - leaves and roots

  Leaves and roots of native Viola species were recorded in topical poultice preparations applied to headaches and skin irritations in several Woodland Indigenous communities.

• European herbal tradition, John Gerard's Herball (1597) - flowers

  Gerard described violet flowers as cooling and moistening according to humoral medicine, noting their historic use in syrups and conserves made from the petals in English apothecary practice.

• American domestic tradition, 18th–19th century - leaves and flowers

  Violet leaves, noted to be rich in vitamin C and mucilage, were gathered in spring as a pot herb and salad green; flowers were candied or added to vinegar in household receipt books of the period.

Common blue violet leaves and flowers are edible in moderate culinary quantities. The roots contain saponins and are not considered food-safe. Do not harvest plants from lawns treated with herbicides or near roadsides with chemical runoff.

This information is provided for historical and educational purposes only and is not medical advice. Always consult a qualified healthcare professional before making decisions related to your health.

Morphology (Plant Structure & Identification)

• Root System

  Violets spread by short rhizomes that form dense clumps over time; dividing crowns every 3–4 years keeps patches vigorous and prevents overcrowding in formal beds.

• Stem

  Plants are nearly stemless rosettes; flowers and leaves arise on separate slender petioles directly from the crown, making the plant very low to the ground and excellent as a living groundcover under taller plants.

• Leaves

  Heart-shaped, scallop-edged leaves are dark green and glossy; yellowing leaves in midsummer are normal summer dormancy, not a disease signal, and plants typically re-green in cooler fall weather.

• Flowers

  Spring flowers are five-petaled, typically rich violet-blue with white throats and nectar guides, blooming March through May; inconspicuous cleistogamous flowers form at soil level in summer and set abundant seed without opening.

• Fruit

  Seed capsules split into three segments when ripe, ejecting small seeds several feet by elastic tension; allowing capsules to ripen before mowing is essential to naturalizing a patch and supporting self-seeding colonies.

Known Varieties

Common cultivars worth knowing

• Viola sororia 'Freckles'

  A striking cultivar with pale lavender-white flowers heavily speckled with violet-purple dots; very popular in cottage gardens for its unusual patterning.

  Best for: Ornamental borders and container planting

• Viola sororia 'Albiflora'

  Pure white-flowered form of the common blue violet; retains the same vigorous spreading habit and edibility as the species.

  Best for: White gardens and moon gardens; edible garnish

• Viola sororia (wild type)

  The straight species with deep violet-blue flowers is the most reliable for naturalizing, supporting fritillary butterflies, and providing edible spring greens.

  Best for: Native plantings, lawn alternatives, and wildlife gardens

• Viola odorata (Sweet Violet)

  A European species, not native, but widely grown for its intensely fragrant purple flowers; commonly used for candied flowers and violet syrup; less cold-hardy than V. sororia in zones 3–4.

  Best for: Fragrant gardens, culinary use, and zones 5–9