Photo: Fritz Geller-Grimm, CC BY-SA 2.5 · source

Perennial · Violaceae

Sweet violet

Viola odorata

In other languages: Maarts viooltje (Nederlands) · Violette odorante (Français)

Sweet violet is a low, semi-evergreen perennial from Europe, western Asia and North Africa, often found in old gardens, hedge bottoms and woodland edges. It forms rosettes of heart-shaped leaves and spreads by surface runners into a dense carpet. From February to April it bears small violet, sometimes white or pink flowers with a wonderful sweet scent. The flowers are edible and look lovely in salads or crystallised on cakes. Well-known cultivars include ‘Königin Charlotte’, with dark purple flowers that face upwards, and the white ‘Alba’.

Caution: Sweet violet spreads by runners and by seed that ants carry off. In a border or lawn it can become invasive: plant it where it is allowed to spread, or cut back the edges every year.

Updated on 9 October 2026

Light
Partial shade or shade
tolerates little sun
Moisture
Normal
no wet feet
Legal basis
Loam or clay
any pH
Hardiness
Fully hardy
down to -25 °C
Size
0.15 m
tall, 0.3 m wide
Flowering
February–April

Key facts
Height	0.15 m
Native to Belgium	No, planted
Good for bees, butterflies and birds	Yes, for bees and butterflies
Poisonous to people and pets	Not known to be poisonous
Flowering	February–April

Identify

Sweet violet: how do you recognise it?

Habit: Low rosettes 10–15 cm tall that spread by runners into a mat 30 cm or more across.
Leaves: Heart-shaped, 3–7 cm, finely toothed, dark green and slightly hairy; evergreen in mild winters.
Flower: Small spurred violets 1.5–2 cm across, violet, white or pink, from February to April.
Scent: Sweet and powdery; strongest on a sunny, still day.
Fruit: Small capsules, often hidden under the leaves, that shoot out their seeds.
Roots: A short rhizome with long runners that root and make new plants everywhere.

Flowering: February–April · Harvest and fruit: February–May · Plants: March–April and September–October

In your garden

Why grow it?

One of the first scented flowers of the year, as early as February and March.
Early bees and bumblebees find nectar in it; the caterpillars of several fritillary butterflies feed on violets.
An easy ground cover under shrubs, at the foot of a hedge or in a shady corner.
Edible flowers for salads, desserts or crystallising.
The leaves stay green in mild winters and help keep weeds down.

Sweet violet: where does it grow best?

Partial or light shade, for example under deciduous shrubs or at the foot of a hedge.
Humus-rich loam or clay; acid, neutral or chalky, all are fine.
Moist but not wet: not drying out in summer and not waterlogged in winter.
Plant 20–30 cm apart; the runners soon close the gaps.

Light: Partial shade and shade
Soil type: Loam or clay
Acidity: Not fussy
Moisture: Normal
Size: 0.15 m tall, 0.3 m wide
Hardiness: Hardy (to -25 °C)

Goes well with

Snowdrop: Flowers at the same time; together they make an early spring carpet under shrubs.
Primrose: Pale yellow flowers next to the violet, in the same partly shaded spot.
Christmas rose: Large flowers in winter, with violets as low ground cover beneath.
Lungwort: Spotted leaves and pink-blue flowers in March–April.
Barrenwort: Another tough ground cover for partial shade under shrubs.

Maintenance

Sweet violet: when and how to plant it?

Plant in March–April and September–October.

Plant in March–April or in September–October.
Loosen the soil and work in some compost or leaf mould.
Set the plant at the same depth as in its pot, with the crown level with the soil.
Leave 20–30 cm between plants; for quick ground cover use 9–12 plants per square metre.
Water well straight away and keep the soil moist for the first few weeks.
Spread a thin layer of leaf mould between the plants.

Care

Watering: Regularly after planting. After that only during long dry spells in summer.
Feeding: A little compost or leaf mould in autumn or early spring is enough.
Mulching: A layer of fallen leaves or leaf mould mimics their natural woodland-edge home.
Runners: Pull out runners where you do not want violets, or replant them elsewhere.
Harvesting: Pick the flowers in the morning, just open. Use them fresh in salads or crystallise them with egg white and sugar.

Tip: Plant violets along a path or under a window, so you smell them every time you walk past in March. Pick a few flowers for a tiny posy indoors; the scent fills the room.

Sweet violet: when to prune it?

When: Sweet violet needs no pruning. A little tidying is enough.

How:

Remove yellow or damaged leaves whenever you see them.
Cut off runners that creep out of the border.
For fewer seedlings, snip off the young seed capsules after flowering.

Pruning calendar and basic rules

Propagation

Runners: After flowering or in September: cut a rooted plantlet off a runner and plant it elsewhere.
Division: In March–April, after flowering, or in September, lift a clump, pull it apart and replant straight away.
Seed: Sow fresh seed in autumn in a pot outdoors; it only germinates after a cold winter.

Sweet violet: how does it get through the winter?

Hardy to −25 °C.

Fully hardy, to about −25 °C: no protection needed.
In mild winters the leaves stay green and the first flowers sometimes open in January.
Leave fallen leaves between the plants: they protect and feed the soil.
In a pot or window box, simply leave it outside; make sure excess water can drain away.

Diseases and pests

Slugs and snails: Holes in young leaves and nibbled flowers, mainly in spring. Pick them off in the evening or set traps.
Rolled leaves: Thickened, rolled leaf edges are caused by the larvae of a small gall midge. Cut off affected leaves and put them in the household waste.
Red spider mite: Dull, finely speckled leaves in hot, dry weather. Water and give the plants a cooler, shadier spot.
Spreading: In a good spot, sweet violet spreads quickly by runners and seed. Spade off the edges and weed out seedlings.

Through the year

February: First flowers. Pick for the kitchen.
March: Full flower and scent. Planting.
April: Last flowers. Plant or divide after flowering.
May: Remove unwanted runners. Watch out for slugs.
July: Water during long dry spells.
September: Planting. Replant rooted runners. Sow fresh seed.
October: Planting. Spread compost or leaf mould between the plants.
December: Rest. Leave fallen leaves in place.

Use

Edible and useful

Flowers (February–April): Pick the fragrant purple (or white) flowers from February to April on a dry day, with a bit of stalk. Sweet and scented, they look lovely on cakes and salads and flavour syrup and sugar. Leave enough for the early bees and to set seed.
Leaves (March–May): The young, heart-shaped leaves in March–May are mild and a little mucilaginous: add a few to a mixed salad or soup.
Storing: Fresh flowers keep for a day in the fridge in a box with a damp piece of kitchen paper. Crystallised, they keep for months; as a syrup, six months. Dried, they lose their scent.

Caution: Sweet violet itself is edible in normal amounts. Do not eat the roots or seeds: they cause vomiting. Use flowers from plants that have not been sprayed; let garden-centre violets grow on for a few weeks first. In the wild, do not pick in nature reserves.

Eating and using is at your own risk: see the terms of use.

Recipes

Crystallised violets (Other · ± 40 flowers · 30 min + 1 day drying)
Violet syrup (Syrup · ± 300 ml · 20 min + overnight steeping)

Good for wildlife

Bees: Nectar and pollen for honeybees and wild bees.
Butterflies: Nectar for butterflies.

You and this species

Did you know?

Besides the familiar spring flowers, violets produce small, closed flowers under the leaves in summer. These never open and pollinate themselves.
The seeds carry a small, fatty appendage that ants love. They drag the seeds to their nests and so spread the violet around.
The scent of violets fades after a few sniffs: certain scent compounds in the flower briefly numb your sense of smell.

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