Species

Campanula mediumCanterbury Bells

perennial

Canterbury Bells

Campanula medium 'Deep Blue'

The Story

Plant Bio

Campanula medium 'Deep Blue' is known for its tall spikes of vibrant blue flowers and its attractive leafy rosettes.

This cultivar is particularly valued for its deep blue color and is often used in mixed borders or as a cut flower.

Uses & Benefits:

Campanula medium Deep Blue provides vibrant blue flowers that brighten shaded garden areas, attracting pollinators like bees and hummingbirds.

Its adaptability to partial shade makes it a versatile groundcover or border plant, reducing maintenance.

Supports local pollinators and enhances biodiversity in garden ecosystems.

SpeciesCampanula mediumCanterbury Bells

Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

12 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8

Water

Moderate

Humidity

Average

Lifespan

Biennial

Native To

Southern Europe

Toxicity

Non-toxic to humans and pets

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds into moist soil in early spring for best germination.
Mist cuttings regularly to keep humidity high during propagation.
Plant in well-drained soil enriched with organic matter.
Water consistently, especially during dry spells, to keep soil moist.
Fertilize monthly with a balanced liquid fertilizer during the growing season.
Prune back after flowering to encourage bushier growth.

Pro Tip

Use a layer of mulch around plants to retain moisture and suppress weeds.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Prune dead or damaged stems after flowering
Fertilize monthly during active growth

Don't

Avoid overwatering to prevent root rot ❌
Don’t allow soil to dry out completely
Refrain from heavy fertilization late in the season

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Propagate
Stake

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Violet‑flowered border for shaded garden bedsColorful container accent with lush foliage

Companion Plants

Ferns Hostas Astilbe Heuchera

Multiply

Propagation Methods

Good to Know

Common Questions

Canterbury Bells questions

What zones can Canterbury Bells grow in?

Canterbury Bells is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Canterbury Bells deer resistant?

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

When does Canterbury Bells bloom?

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

Does Canterbury Bells need full sun?

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