Open Summer Flowers for Pollinators

Dahlia Collarette Fantastico is a single, open-flowered dahlia selected for its accessible blooms, long flowering season and genuine value to pollinators. From midsummer through to the first frosts, it produces striking bicolour flowers with a clearly visible central disc, surrounded by a decorative collar of shorter petals.

Unlike double or fully decorative dahlias, the collarette form leaves pollen and nectar easy to reach. Bees, hoverflies and butterflies visit regularly throughout the season, making ‘Fantastico’ a reliable non-native support plant for extended summer forage.

Why We’ve Chosen Dahlia Fantastico

• Accessible Nectar & Pollen – Open-centred flowers support a wide range of pollinators.

• Long Flowering Season – Blooms from July until frost, extending food availability late into the year.

• Distinctive Collarette Form – Combines ornamental interest with real ecological function.

• Low-Input Performer – Flowers freely with simple deadheading and basic care.

• Well Suited to Wildlife Borders – Works beautifully in mixed, informal and pollinator-focused planting.

Biodiversity-Led Growing Tips

Plant tubers in spring once the risk of frost has passed, in well-drained soil and full sun. Regular deadheading encourages continuous flowering and maximises nectar availability for insects.

Leave plants flowering as long as conditions allow in autumn. Lift tubers after the first frost and store overwinter to ensure strong flowering in subsequent seasons.

Did you know?
Collarette dahlias are among the most pollinator-friendly ornamental dahlias, offering both visibility and easy access to pollen and nectar.

Product Details

• Pack Size: 1 tuber

• Flower Colour: Bicolour (with exposed central disc)

• Flowering Period: July – first frosts

• Mature Height: Approx. 80–90 cm

• Planting Time: Spring (after last frost)

• Position: Full sun

• Soil: Well-drained

• Spacing: 45 – 60 cm apart

Please note: Do not ingest ornamental bulbs. May be harmful to pets and animals. We recommend wearing gloves when planting, as some bulbs can cause skin irritation.

A standout collarette variety, Dahlia Fantastico delivers eye-catching summer colour with meaningful, long-season pollinator support, making it an excellent choice for biodiversity-aware gardens.

Use a Dibber for planting bulbs.