Cosmos atrosanguineus, commonly known as Chocolate Cosmos, is a truly distinctive summer-flowering bulb, prized for its deep burgundy flowers and rich chocolate-like fragrance. Flowering from August to September, this elegant plant adds colour, scent, and drama to borders, containers, and patio displays.

The velvety, dark blooms sit on slender stems above attractive foliage, making Chocolate Cosmos a superb choice for sensory gardens and pollinator-friendly planting. Its unusual fragrance is most noticeable on warm, sunny days, making it a real talking point in the garden.

Key Features
✓ Deep burgundy flowers with a chocolate scent
✓ Late summer flowering from August to September
✓ Ideal for borders and containers
✓ Attracts bees and pollinators
✓ Perfect for sensory gardens

Size
✓ Mature height: approx. 65cm (26 inches)

Planting & Growing
✓ Planting time: from March onwards
✓ Plant tubers approx. 15cm (6 inches) deep
✓ Spacing: approx. 30cm (12 inches) apart
✓ Position: full sun
✓ Soil: moist, well-drained soil

Chocolate Cosmos prefers a warm, sheltered position and benefits from consistent moisture during the growing season.

Aftercare
Water regularly during dry periods and deadhead spent flowers to encourage continued blooming. In colder areas, lift and store tubers over winter or protect them with a thick mulch, as they are not fully frost hardy. Plants may take a season to establish before reaching full flowering potential.