It can spread aggressively in ideal conditions but is usually easy to manage.

Does it need full sun?

It prefers full sun to partial shade.

Plant guide

Self-heal.

Prunella vulgaris

Pronounced proo-NEL-uh vul-GAIR-iss

Also known as Alpine Self-heal, Common Self Heal, Common Selfheal, Heal-all

common selfheal — Photo by Millie Basden (CC BY) via iNaturalist

Self-heal is a hardy, low-growing perennial that is often found in meadows and along paths. It is well known for its traditional use in herbal medicine and its ability to spread through creeping stems. This plant is a fantastic choice for naturalizing in a garden or supporting local pollinators.

Another photo of Self-heal — Photo by harrylurling (CC BY) via gbif

At a glance

Care level: Easy
Plant type: Herbaceous perennial
Light: Full sun to partial shade
Indoor light: Bright indirect
Water: Every 2 to 5 days
Mature size: 30 cm height, 60 cm spread
Growth rate: Fast
Hardiness: USDA 3 to 9
Bloom time: Late spring to early autumn

Care

Keep the soil consistently moist to mimic its natural damp habitat. Watch for wilting during dry spells, as this plant does not tolerate drought well. It spreads quickly, so consider planting it in a contained area if you want to keep it from wandering.

Watering: Keep the soil evenly moist but not waterlogged.
Feeding: Apply a balanced organic fertilizer once during the spring.
Pruning: Deadhead spent flowers to encourage a second flush of blooms.
Repotting: Repot in spring if the plant becomes root bound.
Soil: Moist, well-draining, fertile soil
Soil pH: Neutral to slightly acidic
Temperature: -30 to 35°C
Humidity: 40 to 80%
Drought tolerance: Moderate
Lifespan: Perennial, typically 3 to 5 years.
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing out of drainage holes
Water running straight through the pot
Stunted growth

Safety

People: It is generally considered non toxic to humans.
Children: The plant is safe for children to touch, though ingestion of any wild plant should be discouraged.
Contact allergens: There are no common reports of skin irritation from this plant.
Airborne allergens: Pollen may cause mild reactions in sensitive individuals during peak bloom.
Edibility: While historically used in teas, consult a professional before consuming wild plants to ensure proper identification.

How to identify it

Square stems typical of mint family
Opposite, lance-shaped leaves
Dense, terminal spikes of purple flowers
Creeping stems that root at nodes

Height: 0.1 to 0.4m
Spread: 0.2 to 0.6m
Leaves: green, deciduous
Flowers: purple, violet, white, 1 to 2cm

Problems to watch for

Powdery MildewCommon
Slugs and SnailsCommon
AphidsUncommon
Root RotUncommon

By symptom

Plant problems by symptom

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Growing it

Propagation: division, seed
When to plant: spring, autumn
Overwintering: The plant dies back to the ground in winter. No special protection is needed as it is fully hardy.
In containers: It grows well in containers, provided the pot has drainage holes and is at least 20 centimeters wide.

Division

1. Dig up a mature clump in spring.
2. Gently pull the root mass apart into smaller sections.
3. Replant immediately in moist soil.

Seed

1. Sow seeds on the surface of damp soil in autumn.
2. Provide light as they need it to germinate.
3. Keep soil consistently moist until established.

Plant in groups to create a dense mat that suppresses weeds effectively.

Grows well with

Yarrow · They share similar moisture and sun requirements in meadow settings.
Wild Strawberry · Both make excellent low growing ground covers.

Similar species

Bugleweed · It has a similar growth habit and purple flower spikes.

Science

Family: Lamiaceae
Genus: Prunella
Order: Lamiales
Class: Magnoliopsida
Native range: Temperate regions of the Northern Hemisphere.
Conservation: It is a common and widespread species with no special conservation status.

It thrives in disturbed soils, meadows, and along paths where it can outcompete smaller grasses.

Value to wildlife: nectar source, supports native bee populations
Pollinators: bees, butterflies, moths
Uses: ground cover, pollinator gardens, meadow plantings, herbal tea

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 1/9
Soil reaction: 5/9
Light: 6/9
Moisture: 6/9
Nutrients: 5/9
Temperature: 5/9

Taxonomy resolved against GBIF.

Questions people ask

Is it invasive?: It can spread aggressively in ideal conditions but is usually easy to manage.
Does it need full sun?: It prefers full sun to partial shade.

Where the name comes from

The genus name Prunella comes from the German word for quinsy, a throat infection it was thought to cure, while vulgaris means common.

Good to know

It is a member of the mint family but does not have a strong scent.
The plant spreads by creeping stems that root at the nodes.
It is found on every continent except Antarctica.
The flowers are arranged in dense, terminal spikes.

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This guide was generated with AI on September 26, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.