Crop guide · The violet family

How to grow Violet

A low-growing perennial that produces fragrant, edible flowers and leaves in early spring, thriving in spots where little else performs.

Viola odorata · also called Sweet violet, English violet

Partial shade Beginner Frost-hardy
Sun
Partial shade
Provide afternoon shade once temperatures stay above 80 °F (27 °C)
Frost
Hardy
Established plants survive hard frost and return reliably each spring
Spacing
9 in
25 cm between plants
Sow depth
⅛ in
3 mm
To harvest
60–90 days
counted from transplant
Soil pH
5.5–6.5
on the acidic side
Timing

When to plant Violet

Windows are counted from the average date of your last spring frost.

Fall planting:8–10 weeks before first fall frost to allow roots to establish before winter.
Too late?Skip spring planting once daytime temperatures regularly exceed 75 °F (24 °C) — plants set out in heat establish poorly; wait for a fall planting instead.
Background

Why grow Violet

Violet flowers and young leaves are both edible, adding color to salads and desserts with minimal maintenance. Once established, plants spread steadily by runners and self-seeding, filling gaps under shrubs or along shaded borders.

A little history. Native to Europe and western Asia, Viola odorata is a stoloniferous (runner-producing) perennial that also sets seed via two flower types: the showy spring flowers and inconspicuous, self-fertilizing summer flowers that never open.

The season, step by step

From planting to harvest

Sow outside

4–6 weeks before last frost

Sow seeds ⅛ inch (3 mm) deep, and aim for 9 inches (25 cm) between plants once thinned. Press seeds lightly into moist soil; do not bury deeply. A brief cold period (2 weeks in a damp bag in the fridge) improves germination rates. Seedlings emerge in 10–21 days.

Best soil temp 55–65 °F (13–18 °C) Minimum 40 °F (4 °C) Emerges in 10–21 days

Transplant outside

4-6 weeks before last frost for indoor starts; direct sow as soon as soil can be worked

Either works well; needs at least 6 inches of soil depth and good drainage. In containers: 1-gallon pot minimum; wider is better to allow runner spread.

Water and feed

All season

Water when the top inch of soil feels dry; roughly twice a week in warm, dry spells. Water when leaves begin to droop slightly and soil surface feels dry to the touch. Aim for about 1 inch per week including rain.

Feed once in early spring as new growth emerges, then once after the main bloom flush. What to use: balanced compost or a low-nitrogen 5–5-5 organic fertilizer; excess nitrogen favors leaves over flowers.

Prune and maintain

As it grows

Remove spent flowers promptly to extend the bloom period. Cut back runners (the horizontal stems that root at their tips) in summer if spread needs to be controlled. Trim old foliage to the crown in late fall.

Harvest and store

60–90 days from transplant

It's ready when harvest flowers when fully open and petals are firm and brightly colored, typically in early to mid spring. Young leaves are ready when they are small, bright green, and tender — before the plant flowers. Pinch individual flowers at the base of the stem with thumb and forefinger. For leaves, snip young ones with scissors close to the base. Harvest in the morning after dew has dried for best flavor and shelf life.

Place freshly picked flowers between damp paper towels in a sealed container in the refrigerator; use within 2–3 days. Leaves keep up to 4 days refrigerated in a damp cloth.

Companions

Good neighbours, bad neighbours

Plant it with

Lungwort

Lungwort wants the same cool, part-shaded ground and steady moisture violets prefer, and its early flowers open alongside them without crowding the low violet rosette (the flat circle of leaves at soil level).

Hostas

Hosta leaves expand after the violets have finished their spring bloom, casting cooling shade over the crowns just as summer heat arrives and often reducing the midsummer leaf scorch violets show in open sites.

Ferns

Ferns root deeper and more coarsely than the shallow, runner-fed violet, so the two can share a shaded border without fighting over surface water. Keep at least 12 inches between crowns so fern fronds do not smother the flowers.

Primrose

Primrose asks for the same cool soil, dappled light, and even moisture, and both bloom in the same early window, so one watering routine serves the whole planting.

Sweet Woodruff

Sweet woodruff knits a low mat that shades the soil, holds moisture, and crowds out weeds around violet crowns. It spreads steadily, so edge it back each spring to keep it off the violet rosettes.

Keep it away from

Spearmint

Spearmint runs through shaded, moist ground exactly where violets thrive and will overrun a violet patch within a season or two. Grow it in a sunken pot or a separate bed rather than alongside.

Fennel

Fennel roots release substances that stunt most garden plants set close to them, and its height also steals light from a low violet clump. Planted well apart at a bed edge, though, its flowers feed hoverflies and tiny parasitic wasps, so it still earns garden space.

See Violet in the full companion chart →

Crop rotation

After this crop

Rotation

A perennial — it holds its spot for years, so it sits outside the annual rotation.

Violets are a perennial groundcover, so no rotation gap applies — leave clumps in place for years. They are moderate feeders that build a fibrous surface root mat and leave the soil crumbly and shaded; if you finally clear a patch, top-dress with compost before replanting anything.

Trouble to watch for

Pests and diseases

Pests

Violet sawfly larvae

Sign
Irregular holes or scalloped edges on leaves, often with small dark caterpillar-like larvae visible on the undersides.
Fix
Hand-pick larvae and drop into soapy water; for heavy infestations, apply spinosad-based spray in the evening.

Aphids

Sign
Clusters of small soft-bodied insects on new growth and flower stems; leaves may curl or appear sticky.
Fix
Knock off with a firm stream of water; repeat daily for 3-4 days until populations collapse.

Spider mites

Sign
Fine webbing on leaf undersides; leaves develop a pale, stippled (tiny dot) texture and may yellow.
Fix
Increase humidity around plants and spray leaf undersides with water; move containers out of hot, dry spots.

Diseases

Powdery mildew

Sign
White or grey powdery coating on leaf surfaces, most common in late summer when nights cool and days stay warm.
Prevent
Space plants at least 9 inches apart for airflow; avoid wetting foliage when watering; remove and bin affected leaves promptly.

Crown rot

Sign
Plants collapse suddenly; the base of the crown is soft, brown, and may smell musty.
Prevent
Plant in well-draining soil; never let water pool around the crown; avoid mulching directly against the stem base.

Anthracnose leaf spot

Sign
Small, water-soaked spots on leaves that enlarge and turn tan or brown with darker borders.
Prevent
Water at soil level rather than overhead; remove infected leaves; improve air circulation by thinning crowded clumps.
Good to know:Roots and seeds of Viola odorata contain compounds that cause nausea and vomiting if eaten in quantity — do not consume them. Confirm identification carefully, as some ornamental violas are not Viola odorata.
FAQ

Common questions about Violet

When should I plant Violet?
Spring: 4–6 weeks before last frost for indoor starts; direct sow as soon as soil can be worked. Fall: 8–10 weeks before first fall frost to allow roots to establish before winter.
How long until Violet is ready to harvest?
60–90 days, counted from transplant. It's ready when harvest flowers when fully open and petals are firm and brightly colored, typically in early to mid spring. Young leaves are ready when they are small, bright green, and tender — before the plant flowers.
Can I grow Violet in a container?
Either works well; needs at least 6 inches of soil depth and good drainage. In containers: 1-gallon pot minimum; wider is better to allow runner spread.
How often should I water Violet?
Water when the top inch of soil feels dry; roughly twice a week in warm, dry spells. Water when leaves begin to droop slightly and soil surface feels dry to the touch.
Is any part of Violet unsafe to eat?
Roots and seeds of Viola odorata contain compounds that cause nausea and vomiting if eaten in quantity — do not consume them. Confirm identification carefully, as some ornamental violas are not Viola odorata.
How should I store Violet after harvest?
Place freshly picked flowers between damp paper towels in a sealed container in the refrigerator; use within 2–3 days. Leaves keep up to 4 days refrigerated in a damp cloth.

Verdie turns this guide into your plan

Set your garden's location and every window above becomes a real date — then Verdie reminds you when it's time to sow, transplant, water, and pick.

Download on the App Store
Free to download · iPhone & iPad