We're offering you a 3 or 6 Dahlia Creme de CassisTubers for £8.99, saving you up to 31% off Thompson and Morgan's's price of £12.99 (correct as of 17.02.2026).

Dahlia 'Creme de Cassis' – Distinctive Summer Colour

The Dahlia 'Creme de Cassis' is a standout perennial tuber, prized for its dramatic, two-tone blooms that add instant impact to any garden. With its deep purple outer petals fading to a soft pink centre, this dahlia brings a sophisticated touch to borders, beds, and containers. Enjoy a spectacular display from early summer through to the first frost.

Why Choose 'Creme de Cassis'?

• Extended Colour Display: Enjoy continuous flowering from June right into autumn.
• Versatile Placement: Thrives in mixed borders or as a statement in patio pots.
• Eye-Catching Blooms: Each flower head features intricate, layered petals with unique colour play.
• Great for Cutting: Long, sturdy stems make these perfect for fresh floral arrangements indoors.

Growing Guide

• Planting Time: Plant tubers outdoors after the last frost (typically late April–May).
• Soil & Position: Prefers fertile, well-drained soil in a sunny spot. Add compost before planting for best results.
• Watering: Water regularly during dry spells but avoid waterlogging.
• Feeding: Apply a balanced fertiliser every few weeks during the growing season.
• Pest & Disease: Watch for slugs and snails; remove faded blooms to encourage more flowers.

Caring for Your Dahlias

• Tubers Over Winter: In colder areas (UK zones 8–10), lift tubers after the first frost and store in a cool, dry place until spring.
• Pruning: Deadhead spent flowers regularly to promote new blooms.
• Mature Size: Grows up to 90cm tall, making it ideal for mid-border planting schemes.

Design Tips & Companion Plants

• Dahlias pair beautifully with ornamental grasses, salvias, and rudbeckias for bold summer borders.
• Add to cottage gardens or modern schemes where dramatic colour is desired.

FAQs

• When should I plant my dahlia tubers?
  Plant outdoors after the risk of frost has passed, usually late April or May in the UK.
• How tall will 'Creme de Cassis' dahlias grow?
  This variety typically reaches up to 90cm in height when fully mature.
• Do I need to lift the tubers each year?
  If you live in colder regions, lift and store the tubers over winter to protect them from frost damage.