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Cosmos sulphureus is a fast-growing, heat-tolerant annual known for its upright, branching growth and finely divided foliage. It produces bright, daisy-like flowers on slender stems throughout the growing season. This plant grows well in warm climates and performs best in full sun with well-drained soil. Cosmos sulphureus adapts easily to garden beds, borders, and container planting, establishing quickly and maintaining continuous flowering during the season.
Features
- Upright annual with finely divided foliage
- Produces bright, daisy-like flowers on slender stems
- Suitable for warm and sunny climates
- Adaptable to garden beds, borders, and containers
- Continuous flowering during the growing season
Specifications
- Scientific name: Cosmos sulphureus
- Common name (US): Cosmos
- Seed type / variety: Open-pollinated
- Growth habit: Upright, branching annual
- USDA zones: 2–11 (grown as annual)
- Planting season: Spring
- Growing season: Spring to fall
- Sowing Season: February to April
- Germination time and conditions: 7–14 days at 18–24°C
- Sunlight requirements: Full sun
- Soil requirements: Well-drained, moderately fertile soil
- Watering needs: Moderate, allow slight drying between watering
- Mature plant size: 60–120 cm height, 30–60 cm spread
- Plant spacing: 25–30 cm between plants
