Garden cosmos 'Xanthos' (Cosmos bipinnatus 'Xanthos')

Garden cosmos 'Xanthos'

Also known as: Annual cosmos 'Xanthos'

Garden cosmos 'Xanthos' has a compact habit and offers single, pale lemon-yellow flowers that fade to white at the edges. Foliage is mid-green and feathery. This is a cultivar of Cosmos bipinnatus named from the Greek word meaning yellow. It has a long blooming season from early summer to fall, making it a popular choice for gardeners.

Scientific classification

Asters bellflowers fanflowers and allies

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Annual

Lifespan

Herb

Plant Type

Mid summer, Late summer, Fall, Early winter

Bloom Time

Spring, Summer

Harvest Time

60 cm

Plant Height

White, Yellow

Flower Color

Winter dormancy

Dormancy

Deciduous

Leaf type

20 - 35 ℃

Ideal Temperature

Care Guide for Garden cosmos 'Xanthos'

Twice per week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Garden cosmos 'Xanthos' prefers moist, well-drained soil and thrives in high humidity. Water twice a week for consistent moisture, but avoid saturation. Typically grown outdoors in full sun, garden cosmos 'Xanthos' blooms vibrantly when watering aligns with its natural growing season.

Fertilize: Garden cosmos 'Xanthos' requires minimal fertilization; over-fertilizing can lead to leggy growth and fewer blooms. Use a balanced fertilizer (N-P-K = 20-20-20) for seedlings to enhance root development. As it matures, apply phosphorus and potassium to support blooming, ceasing fertilization after flowering.

Pruning: Garden cosmos 'Xanthos' features vibrant blooms and feathery foliage. Prune in early to late spring to encourage growth and bushiness. Remove dead stems and spent flowers for continuous blooming. Use clean tools to prevent disease and ensure a healthy, attractive garden.

Propagation: Garden cosmos 'Xanthos' is propagated by surface sowing seeds, as they require light for germination. Press seeds into well-draining soil without covering, lightly mist to maintain moisture. Position in a warm, bright area, and thin seedlings after true leaves emerge to promote growth of the strongest plants.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free