Dianthus Arctic Star

Description

Dianthus ‘Arctic Star’ – alpine pink

Botanical name: Dianthus ‘Arctic Star’
Common names: Alpine pink, garden pink
Family: Caryophyllaceae
Plant type: Evergreen perennial
Habit: Compact, cushion- or mat-forming
Pot size: 1 litre pot
Eventual size: Approx. 10–20cm tall × 20–30cm spread
Foliage: Neat grey-green foliage; evergreen
Flowers: Fragrant, fringed pure white flowers through summer (June–August)
Scent: Fragrant flowers
Aspect / light: Full sun
Soil: Sharply drained, gritty; tolerates lime; neutral to alkaline
Hardiness: RHS H5 (hardy, to about −15°C); USDA zones 4–8
Exposure: Open, sunny; dislikes wet
Native range: Garden hybrid; the genus is native to Europe and Asia
Toxicity / pet & child safety: Low toxicity; may cause mild stomach upset if eaten by pets, and the sap can occasionally irritate skin

Dianthus ‘Arctic Star’ is a compact alpine pink with neat grey-green foliage and fragrant, fringed pure white flowers through summer. Loving sharp drainage and sun, it is perfect for rockeries, troughs and edging.

GardenAdvice notes

A compact, evergreen alpine pink in the carnation family, this dianthus forms a neat cushion of blue-grey or grey-green foliage topped with a generous, usually fragrant, summer display. It thrives in the lean, sharply drained, limy conditions of a rockery or sunny border edge and is loved for its scent and long flowering.

Growing & planting

Plant in spring in full sun with very sharp drainage — a gritty, well-drained or limy soil is ideal, and heavy ground should be improved with grit. Plant with the neck of the plant at soil level, not buried, to avoid rot. Ideal for rockeries, troughs, walls and the front of sunny borders. Space about 25cm apart.

Care & maintenance

Deadhead regularly to prolong flowering and keep plants tidy. Water only while establishing. Avoid rich feeding and heavy mulching over the crown, which cause rot. Pinks are naturally short-lived, so take a few cuttings each summer to keep a supply of young plants.

Propagation

• Cuttings (pipings): Take cuttings, known as pipings, from non-flowering shoots in summer — they root easily.
• Layering: Peg down side shoots to root, then detach.
• Seed: Species and some forms can be raised from seed, though named pinks are best from cuttings.

Pests & diseases

Generally trouble-free. Rust and occasional aphids can occur, and plants rot in wet, heavy soil or if the crown is buried. Sharp drainage and good air movement keep them healthy.

Uses in the garden

Perfect for sunny rockeries, alpine troughs, dry stone walls, gravel gardens and the front edge of well-drained borders, where the fragrant flowers can be enjoyed close up.

Wildlife value

The nectar-rich, fragrant flowers attract bees, butterflies and other pollinating insects.

Toxicity & safety

Pinks have a low level of toxicity: they may cause mild stomach upset if eaten by pets, and the sap can occasionally irritate sensitive skin.

GardenAdvice tip

‘Arctic Star’ keeps flowering longest if you deadhead diligently — snap off spent blooms and it will keep producing its fragrant white flowers for weeks. Plant it with the crown sitting right at soil level and give it gritty, sharp drainage, and it will thrive where damper spots would rot it.

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