perennial

Spotted bellflower

The Story

Plant Bio

Campanula punctata, the spotted bellflower, is an upright, clump-forming herbaceous perennial native to East Asia that spreads via underground stolons. The plant features coarsely toothed, heart-shaped basal leaves and softly hairy stems carrying large, drooping, bell-shaped flowers.

The two-inch-long blossoms range from white to deep purplish-pink, distinguished by prominent red or purple spots and fine hairs on the interior. Unlike strictly clumping bellflowers, this species expands steadily to form a dense groundcover in moist, fertile soils.

Uses & Benefits:

Produces large, drooping, heavily spotted bell-shaped flowers that create a dramatic vertical display in borders and cut arrangements.

Serves as an effective groundcover for filling restricted spaces, with foliage that is highly resistant to rabbit and deer browsing.

Attracts bumblebees, native bees, and hummingbirds seeking nectar in its tubular blossoms.

Essentials

At a Glance

Plant Type

Perennial

Height

24"

Width

36"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Medium

Humidity

Moderate

Lifespan

Perennial

Native To

East Asia

Toxicity

Non-toxic

Bloom period

Late spring – Mid-summer

In flower about 3 months of the year

Planting

How to Grow

Select a site in full sun to partial shade, opting for afternoon shade in hot summer climates.
Amend the planting area with compost to create a fertile, humus-rich, well-draining soil.
Dig a hole twice the width of the root ball and set the plant at the same depth as its nursery container.
Water thoroughly at the base to settle the soil, keeping the area evenly moist but never waterlogged.

Pro Tip

Install deep root barriers or plant within restricted borders to contain the aggressive underground runners, which easily overwhelm weaker neighboring perennials in loose, fertile soil.

Keep It Thriving

Care Guide

Do

Deadhead spent flowers regularly to encourage reblooming and prevent self-seeding.
Provide supplemental water during prolonged dry spells to prevent heat stress.
Divide congested clumps every three to four years to maintain plant vigor.

Don't

Do not plant in poorly draining or waterlogged soils, which trigger root rot.
Avoid over-fertilizing, as excess nutrients encourage weak, leggy stem growth.
Do not site in small rock gardens or near delicate plants without root containment.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Fertilize
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Understory GroundcoverRestricted BordersCottage GardensCut Flower Gardens

Multiply

Propagation Methods

Good to Know

Common Questions

Spotted bellflower questions

What zones can Spotted bellflower grow in?

Spotted bellflower is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Spotted bellflower deer resistant?

Yes — Spotted bellflower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Spotted bellflower bloom?

Spotted bellflower typically blooms in late spring through mid-summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Spotted bellflower need full sun?

Spotted bellflower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.