How to Grow Canterbury Bells (Campanula): Elegant Biennial Bellflowers

How to Grow Canterbury Bells (Campanula)

Canterbury Bells (Campanula medium) are showy biennials with 2-inch, bell-shaped flowers in pink, white, purple, lavender, blue, and violet in summer of their second year. 18–36 inches tall. For yearly blooms, sow annually. Easy and rewarding.

Propagation

Sow seeds early or indoors 4–6 weeks before frost. Allow some pods to mature and self-sow for continuity. Germinates 14–21 days.

How to Grow Canterbury Bells

• Light: Full to part sun; afternoon shade in hot climates.
• Soil: Rich, moist, well-drained.
• Fertilizer: Monthly or bi-monthly.
• Maintenance: Mulch for tidiness and weed control.

Bloom Time

Summer.

Pests & Diseases

Few.