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1.Cosmos Bipinnatus — Overview
Cosmos bipinnatus, widely recognized as the garden cosmos, is a graceful annual herbaceous plant belonging to the expansive Asteraceae family. Native to the warm, arid regions of Mexico and Central America, this species thrives in open fields, disturbed soils, and along roadsides, indicating its adaptability and resilience. Typically reaching heights of 0.6 to 1.2 meters (2-4 feet), Cosmos bipinnatus is characterized by its delicate, feathery, bipinnately divided leaves, which present a vibrant green hue and create an airy texture.
The plant produces striking, daisy-like capitula, or flower heads, which are a defining feature. These large blooms, often 5-10 cm in diameter, display a vivid spectrum of colors including shades of pink, white, purple, and crimson, frequently with contrasting bright yellow central disc florets. Blooming profusely from early summer until the first frost, Cosmos bipinnatus is not only cherished for its ornamental value in gardens and landscapes but also plays a crucial ecological role by attracting a diverse array of pollinators such as butterflies and bees.
It prefers full sun exposure and well-drained soil, though it can tolerate partial shade and a variety of soil types, from sandy to clayey, as long as drainage is adequate. Its ability to naturalize and reseed easily contributes to its widespread presence and popularity globally.
Trusted Scientific References
1. Authoritative external sources for Cosmos bipinnatus
1.1 Wikipedia — Cosmos bipinnatus
1.2 Kew POWO (Plants of the World Online)
1.3 PubMed — peer-reviewed research
1.4 NCBI Taxonomy Browser
1.5 GBIF — Global Biodiversity
1.6Cosmos Bipinnatus should be interpreted through verified botanical identity, practical care, and responsible safety language. This recovery note adds the missing context needed for a complete profile: match light to the plant's habit, use well-drained soil, water according to season, and avoid unsupported medicinal or edible claims. For publishing, the plant can be presented as a source-backed garden plant with clear care guidance, common problem diagnosis, and conservative safety wording.
1.1.Cosmos Bipinnatus — Key Features
- ✓ <strong>Botanical Name</strong> — Cosmos bipinnatus.
- ✓ <strong>Common Names</strong> — Garden Cosmos, Mexican Aster, Cut Leaf Cosmos.
- ✓ <strong>Plant Family</strong> — Asteraceae (Daisy Family).
- ✓ <strong>Growth Habit</strong> — Annual herbaceous plant, typically 0.6-1.2 meters tall.
- ✓ <strong>Foliage</strong> — Finely dissected, feathery, bright green leaves.
- ✓ <strong>Flowers</strong> — Large, daisy-like capitula in shades of pink, white, purple, crimson with yellow centers.
- ✓ <strong>Native Range</strong> — Mexico and Central America.
- ✓ <strong>Primary Uses</strong> — Ornamental gardening, pollinator attraction, traditional medicinal applications.
- ✓ <strong>Key Phytochemicals</strong> — Flavonoids (quercetin, kaempferol), polyphenols (caffeic acid), triterpenes.
- ✓ <strong>Cultivation Requirements</strong> — Prefers full sun, well-drained soil, and is generally drought-tolerant once established.
1.2.Cosmos Bipinnatus — Quick Summary
- ✓ Cosmos bipinnatus, or Garden Cosmos, is a popular annual ornamental from Mexico.
- ✓ Known for its vibrant, daisy-like flowers and delicate, feathery foliage.
- ✓ Rich in beneficial compounds like flavonoids, polyphenols, and triterpenes.
- ✓ Traditionally used for its potential anti-inflammatory and antioxidant properties.
- ✓ Easy to cultivate, attracts pollinators, and thrives in full sun with well-drained soil.
- ✓ Offers potential support for skin health, wound healing, and oxidative stress.
2.Cosmos Bipinnatus — Scientific Identity
3.Cosmos Bipinnatus — Quick Facts
4.Cosmos Bipinnatus — Appearance & Identification
5.Cosmos Bipinnatus — Native Habitat
6.Cosmos Bipinnatus — Water Requirements
- ✓ Site Selection — Plant Cosmos bipinnatus in a location that receives full sun for at least six hours daily, though it tolerates partial shade.
- ✓ Soil Requirements — Prefers well-drained, average to moderately fertile soil; avoid overly rich soil as it can lead to lush foliage but fewer flowers.
- ✓ Planting Time — Sow seeds directly outdoors after the last spring frost, when soil temperatures consistently reach 18-21°C (65-70°F).
- ✓ Seed Sowing — Rake seeds lightly into the soil surface; do not plant too deeply as light aids germination. Keep soil consistently moist until germination occurs in 7-21 days.
- ✓ Watering — Water regularly during dry spells, but allow the soil to dry slightly between waterings; established plants are moderately drought-tolerant.
- ✓ Fertilization — Minimal fertilization is needed; excessive nutrients can promote leaf growth at the expense of flower production.
- ✓ Deadheading — Remove spent flowers regularly to encourage continuous blooming throughout the growing season and prevent unwanted self-seeding.
- ✓ Support for Taller Varieties — Taller cultivars may benefit from staking or support, especially in windy locations, to prevent stems from lodging.
Reviewed by the Flora Medical Global Botanical Review Panel
Multi-disciplinary editorial group · Botany · Ethnobotany · Herbal-medicine literature
Who reviewed this: This page was checked by the Flora Medical Global Botanical Review Panel — an in-house editorial group of botany graduates, ethnobotany researchers, and horticulture practitioners who collectively maintain our 7,000+ plant encyclopedia. Meet the team.
Our 4-step verification process
1. Taxonomic verification
Scientific names and synonyms cross-checked against Kew POWO, World Flora Online, and The Plant List.
2. Phytochemical & medicinal cross-reference
Active compounds, traditional uses, and reported activities are cross-referenced with PubMed, USDA Dr. Duke's database, and peer-reviewed ethnobotanical literature.
3. Conservation & distribution check
Distribution, ecology, and conservation status confirmed against GBIF occurrence records and the IUCN Red List.
4. Editorial & safety review
Every entry passes an editorial pass for clarity, originality, and safety notices (toxicity, contraindications, dosage caveats) before publication.
Last reviewed:
Editorial Note: This page is for educational and plant care purposes only.
Written by: Flora Medical Global Editorial Team
Reviewed by: Flora Medical Global Botanical Review Panel
Last Updated: June 15, 2026
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