Cosmos 'Radiance' – Seeds

(Cosmos bipinnatus)

Cosmos 'Radiance' is a charming variety that produces large, daisy-like blooms in deep carmine-pink with a lighter halo around the golden-yellow centers. The graceful, feathery foliage and long, slender stems make it a superb choice for garden displays and cut flowers. Easy to grow and long-flowering, it’s a true summer favourite.

Key Features

• Type: Half-hardy annual

• Height: 90–120 cm

• Spread: 40–50 cm

• Flowering: June–October

• Position: Full sun

• Soil: Well-drained, moderately fertile

Ideal For

• Cottage gardens

• Wildlife and pollinator-friendly planting

• Borders and background planting

• Cut flower arrangements

Sowing & Growing

• Sow indoors: March–April at 18–21°C

• Sow outdoors: May–June directly in final position

• Germination: 7–10 days

• Thin/transplant to 30–40 cm spacing

• Deadhead regularly for prolonged flowering