We're offering you a Dahlia 'Kaleidoscope Mix' 18 Tubers for £15.99, saving you up to 30% off Thompson and Morgan's's price of £22.99 (correct as of 27.01.2026).

Dahlia 'Kaleidoscope Mix': A Burst of Colour for Your Garden

Dahlia 'Kaleidoscope Mix' brings a spectacular burst of colour and form to your garden. This curated collection features 18 top-quality tubers spanning nine exceptional dahlia varieties, each chosen for their unique flower shapes—double, cactus, and pompom—and a palette ranging from apricot and peach to vibrant pinks.

Why Choose Dahlia 'Kaleidoscope Mix'?

• Botanical Brilliance: Dahlias (Dahlia pinnata) are renowned for their bold, showy blooms and diverse forms. This mix guarantees an ever-changing display from July until the first frosts.
• Sensory Impact: The combination of textures and colours creates a captivating focal point in beds, borders, or containers.
• Cut Flower Favourite: Long stems and sturdy blooms make these dahlias ideal for homegrown bouquets.

Growing Guide & Care

• Planting Time: Plant tubers outdoors between March and May once all risk of frost has passed.
• Sunlight: Choose a spot with full sun—at least six hours daily—for best flowering.
• Soil: Prefers well-drained, fertile soil. Amend heavy soils with compost or grit to improve drainage.
• Watering: Water regularly during dry spells but avoid waterlogging.
• Feeding: Apply a balanced fertiliser monthly during the growing season to promote vigorous growth and flowering.
• Pest & Disease: Watch for slugs when shoots emerge; use organic controls as needed.
• Lifting Tubers: In colder regions (below USDA zone 8), lift tubers after foliage blackens from frost. Dry and store in a cool, frost-free place until spring.

Design & Companion Planting Ideas

• Borders & Beds: Combine with salvias, rudbeckias, or ornamental grasses for extended seasonal interest.
• Pots & Containers: Use as a dramatic centrepiece surrounded by trailing annuals like lobelia or petunias.
• Cottage Gardens: Pair with cosmos or zinnias for a classic summer display.

FAQs

• When is the best time to plant Dahlia tubers?
  The ideal time is after the last frost in spring—typically March to May in the UK.
• How tall do these dahlias grow?
  Dahlia 'Kaleidoscope Mix' typically reaches up to 90cm (36") in height when mature.
• Do I need to lift the tubers each year?
  If you live in areas where winter temperatures drop below freezing (below USDA zone 8), lift and store tubers over winter. In milder regions, mulch heavily if left in the ground.