Cosmos bipinnatus is an annual flowering plant with delicate, feathery foliage and bright, daisy-like flowers. It’s known for its ease of growth and vibrant colors.
General Information
Family
Asteraceae
Origin
Mexico
Mature Size
Height: 1-2 meters (3-6 feet), Spread: 30-60 cm (1-2 feet)
Growth Rate
Fast
Care Requirements
Light
Full sun (at least 6 hours of direct sunlight daily)
Water
Regular watering, keeping the soil consistently moist but not waterlogged. Reduce watering in cooler months.
Temperature
15-25°C (60-77°F)
Humidity
Average
Soil
Well-draining soil, slightly acidic to neutral pH.
Fertilizer
Balanced liquid fertilizer every 2-4 weeks during the growing season.
Care Guide
⭐ Special Care Tips
Seeds
Cuttings
Not applicable for annuals. If growing in containers, ensure adequate drainage.
Remove dead or damaged flowers and leaves regularly to encourage more blooms. Wipe leaves gently with a damp cloth to remove dust.
⚠️ Common Problems & Toxicity
Improve air circulation, avoid overhead watering, and consider using a fungicide.
Use insecticidal soap or neem oil to control infestations.
Non-toxic to humans and pets.
People Also Ask
How long do cosmos flowers last?
Cosmos flowers typically bloom for several weeks, sometimes months, depending on the variety and growing conditions.
When is the best time to plant cosmos seeds?
After the last frost, when the soil has warmed up.
Do cosmos need deadheading?
Deadheading (removing spent flowers) encourages more blooms and prolongs the flowering period.
- Cosmos Plant – Cosmos Bipinnatus - April 9, 2025
- Snapdragon Plant - April 9, 2025
- Common Blue Violet - April 8, 2025