Care Disclaimer: Plant care recommendations are general guidelines based on common growing conditions. Individual results may vary based on your local environment, climate, and care routine. If your plant is toxic, keep it away from children and pets, and consult a veterinarian if accidental ingestion occurs.
1.Coreopsis Grandiflora — Overview
Coreopsis grandiflora, commonly known as Large-Flower Tickseed or Common Coreopsis, is a striking herbaceous perennial native to a wide range of habitats across eastern and central North America. This member of the Asteraceae (Daisy) family is characterized by its vibrant, showy yellow flowers, which typically bloom profusely from late spring through late summer. The plant forms a neat, clump-forming habit, generally reaching heights of 30 to 90 centimeters (1 to 3 feet) and spreading equally wide.
Its foliage consists of lanceolate to spatulate leaves, often appearing primarily at the base, with some smaller leaves along the stems. The bright yellow, daisy-like inflorescences feature prominent ray florets surrounding a central disk of darker yellow florets, creating an appealing contrast. Coreopsis grandiflora thrives in full sun exposure but can tolerate partial shade, preferring well-drained soils.
It is remarkably adaptable to various soil types, including sandy, rocky, or even clay soils, provided they do not retain excessive moisture. This resilience, coupled with its drought tolerance once established, makes it a popular and versatile choice for perennial borders, rock gardens, and naturalized areas. Its prolific flowering and nectar-rich blooms also make it an invaluable plant for attracting a diverse array of pollinators, including bees, butterflies, and other beneficial insects, thereby contributing significantly to local biodiversity and ecological health.
Trusted Scientific References
1. Authoritative external sources for Coreopsis Grandiflora
1.1 Wikipedia — Coreopsis Grandiflora
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
1.6Coreopsis Grandiflora 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.Coreopsis Grandiflora — Key Features
- ✓ <strong>Botanical Name</strong> — Coreopsis grandiflora.
- ✓ <strong>Common Names</strong> — Large-Flower Tickseed, Common Coreopsis, Tickseed.
- ✓ <strong>Family</strong> — Asteraceae (Daisy Family).
- ✓ <strong>Growth Habit</strong> — Clump-forming herbaceous perennial, typically reaching 1-3 feet in height and spread.
- ✓ <strong>Flower Color</strong> — Showy, bright golden-yellow, daisy-like blossoms.
- ✓ <strong>Bloom Time</strong> — Long-lasting bloom period from late spring through late summer, often into fall.
- ✓ <strong>Sun Preference</strong> — Requires full sun for optimal flowering, tolerating light partial shade.
- ✓ <strong>Soil Preference</strong> — Adapts well to various well-drained soils, including sandy, rocky, and loamy types.
- ✓ <strong>Drought Resistance</strong> — Exhibits excellent tolerance to dry conditions once established.
- ✓ <strong>Pollinator Attraction</strong> — A highly effective nectar and pollen source, attracting numerous pollinators.
1.2.Coreopsis Grandiflora — Quick Summary
- ✓ Vibrant Ornamental — A cheerful, bright yellow perennial adding continuous color to gardens.
- ✓ Pollinator Attractor — Highly valued for drawing bees, butterflies, and other beneficial insects.
- ✓ Drought Tolerant — Thrives in full sun and well-drained soils, requiring minimal water once established.
- ✓ Native Wildflower — Indigenous to North America, supporting local ecosystems and biodiversity.
- ✓ Low Maintenance — Easy to grow and care for, requiring only occasional deadheading.
- ✓ Pet-Friendly — Generally considered non-toxic to common household pets.
2.Coreopsis Grandiflora — Scientific Identity
3.Coreopsis Grandiflora — Quick Facts
4.Coreopsis Grandiflora — Appearance & Identification
5.Coreopsis Grandiflora — Native Habitat
6.Coreopsis Grandiflora — Water Requirements
- Cultivating Coreopsis grandiflora for ornamental or ecological purposes is relatively straightforward due to its hardy and adaptable nature:
- ✓ Light Requirements — Thrives best in full sun, receiving at least six hours of direct sunlight daily, though it can tolerate light partial shade, which may reduce bloom density.
- ✓ Soil Preference — Prefers well-drained soils; sandy, rocky, or loamy conditions are ideal. It can adapt to clay soils if drainage is significantly improved to prevent root rot.
- ✓ Watering Schedule — Requires regular watering, especially during prolonged dry periods and in its establishment phase, but it is drought-tolerant once mature; avoid overwatering.
- ✓ Propagation Methods — Easily propagated by sowing seeds directly in the garden in spring or fall, or by dividing mature clumps every 2-3 years in early spring to rejuvenate the plant.
- ✓ Fertilization Needs — Generally low-maintenance regarding nutrients; a light application of a balanced, slow-release granular fertilizer in early spring can encourage vigorous growth and flowering.
- ✓ Maintenance Practices — Deadhead spent flowers regularly to encourage continuous blooming throughout the season and to prevent excessive self-seeding, which can lead to leggy growth.
- ✓ Pest and Disease Management — Coreopsis grandiflora is relatively resistant to most pests and diseases, but ensure good air circulation to deter fungal issues like powdery mildew or Southern Blight.
- ✓ Winter Care — In colder climates, leaving the foliage intact over winter can provide some insulation, cutting it back to the ground in early spring before new growth emerges.
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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