Does it need full sun?

It prefers full sun but appreciates some afternoon shade in hotter climates.

How do I keep it blooming?

Deadheading spent flowers will encourage a longer bloom period.

Plant guide

Harebell.

Campanula rotundifolia

Pronounced kam-PAN-yoo-luh ro-tun-di-FOH-lee-uh

Also known as Bluebell Bellflower, Common Harebell, Harebell, Harebell / Bluebell, Northern European harebell

Common Harebell — Photo by Sandy Rae (CC BY) via iNaturalist

The harebell is a lovely, delicate perennial that brings a touch of wild charm to any garden. It features slender stems and nodding, bell shaped flowers that dance in the breeze. You will find it is quite hardy and adapts well to various rocky or grassy spots.

Another photo of harebell — Photo by John Steel (CC BY) via iNaturalist

At a glance

Care level: Easy
Plant type: Perennial
Light: Full sun to partial shade
Indoor light: Bright indirect
Water: Every 3 to 7 days
Mature size: 6 to 18 inches
Growth rate: Medium
Hardiness: USDA 2 to 8
Bloom time: Early summer to early autumn

Care

Let the top of the soil dry slightly between waterings and never let it become soggy. Watch for wilting during long dry spells, as this plant prefers cool summers and well-drained, lean soil. Deadheading spent blooms will encourage the plant to produce more flowers throughout the season.

Watering: Water when the top inch of soil feels dry to the touch.
Feeding: Apply a balanced liquid fertilizer once every two months during the active growing season.
Pruning: Trim back spent flower stalks regularly to promote continuous blooming.
Repotting: Repot in the spring if the plant becomes root bound or needs fresh soil.
Soil: Well draining, sandy or rocky soil
Soil pH: Neutral to slightly alkaline
Temperature: -35 to 25°C
Humidity: 40 to 70%
Drought tolerance: Moderate
Lifespan: Short-lived perennial, typically 3 to 5 years.
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing out of the drainage holes.
Water draining through the pot too quickly.
Stunted growth during the active season.

Safety

People: This plant is generally considered non-toxic to humans.
Children: There are no specific safety concerns for children, but it is always best to discourage eating unknown garden plants.
Contact allergens: The sap may cause mild skin irritation in sensitive individuals.
Airborne allergens: The pollen is not considered a significant allergen.
Edibility: While the leaves are technically edible, they are often bitter and not commonly consumed.

How to identify it

Nodding bell shaped blue flowers
Slender, wiry stems
Round basal leaves
Narrow, grass like stem leaves

Height: 0.15 to 0.45m
Spread: 0.2 to 0.3m
Leaves: green, deciduous
Flowers: blue, violet, 1 to 2cm
Fruit: brown, late summer

Problems to watch for

Powdery MildewCommon
Slugs and SnailsCommon
AphidsUncommon
Root RotUncommon
RustRare

By symptom

Plant problems by symptom

Check your harebell from a photo

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Growing it

Propagation: seed, division
When to plant: spring, autumn
Overwintering: Cut back dead foliage in late autumn. It is very cold hardy and requires no special protection.
In containers: It grows well in containers, provided the pot has excellent drainage and is at least 15 cm deep.

Division

1. Carefully dig up the clump in spring.
2. Gently pull the root mass apart into smaller sections.
3. Replant immediately in well-draining soil.

Seed

1. Sow seeds on the surface of moist soil in spring.
2. Do not cover, as they need light to germinate.
3. Keep consistently moist until established.

Plant in groups to create a natural meadow effect that supports local pollinators.

Grows well with

Wild Thyme · They share similar requirements for rocky, well-drained soil.
Blue Fescue · The grass provides a nice textural contrast to the delicate bells.

Similar species

Clustered Bellflower · It has a similar bell shape but flowers are held in dense clusters.

Science

Family: Campanulaceae
Genus: Campanula
Order: Asterales
Class: Magnoliopsida
Native range: Circumboreal regions of the Northern Hemisphere.
Conservation: It is widespread and not of conservation concern.

It thrives in open, well-drained habitats where it can outcompete other plants in nutrient-poor soils.

Value to wildlife: nectar source
Pollinators: bees, butterflies, moths
Uses: rock gardens, pollinator borders, meadow plantings

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 1/9
Soil reaction: 5/9
Light: 7/9
Temperature: 3/9
Moisture: 4/9
Nutrients: 3/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need full sun?: It prefers full sun but appreciates some afternoon shade in hotter climates.
How do I keep it blooming?: Deadheading spent flowers will encourage a longer bloom period.

Where the name comes from

The genus name Campanula comes from the Latin for little bell, while rotundifolia refers to the round basal leaves.

Good to know

It is also known as the bluebell in Scotland.
The plant is remarkably hardy and can grow in very thin, rocky soil.
Its basal leaves are round, which gives it the specific epithet rotundifolia.
It is a classic wildflower of the northern hemisphere.

Keep your harebell growing

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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.