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1.Zinnia Grandiflora — Overview
Zinnia grandiflora, commonly known as Rocky Mountain Zinnia or Plains Zinnia, is a captivating, low-growing perennial herb native to the arid and semi-arid regions of the southwestern United States and northern Mexico, particularly thriving across the Rocky Mountains, Midwest, and Southwest, including Texas, Arizona, and New Mexico. This resilient member of the Asteraceae (Compositae) family forms a dense, mossy mat of tiny, needle-like, bright green leaves, typically measuring around 1 inch (2.5 cm) in length. Its numerous much-branched, woody-based stems give the plant a robust, almost shrub-like appearance.
From late spring through mid-fall, Zinnia grandiflora produces an abundance of small, cheerful daisy-like flowers, approximately 1.5 inches (4 cm) across, characterized by bright yellow to orange ray florets surrounding a distinctive central orange cone. These prolific blooms not only add vibrant color to harsh landscapes but also serve as a vital nectar source, attracting a multitude of beneficial insects, including butterflies, moths, and bees. Growing to a compact height and spread of 4-8 inches (10-20 cm), this plant is highly valued for its exceptional drought tolerance, adaptability to poor soils, and its utility in xeriscaping, rock gardens, and for effective erosion control on sandy slopes.
Trusted Scientific References
1. Authoritative external sources for Zinnia Grandiflora
1.1 Wikipedia — Zinnia 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
1.6Zinnia 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.Zinnia Grandiflora — Key Features
- ✓ <strong>Botanical Name</strong> — Zinnia grandiflora
- ✓ <strong>Common Names</strong> — Plains Zinnia, Rocky Mountain Zinnia, Prairie Zinnia, Little Golden Zinnia
- ✓ <strong>Family</strong> — Asteraceae (Compositae)
- ✓ <strong>Native Range</strong> — Southwestern United States, Northern Mexico
- ✓ <strong>Flower Color</strong> — Bright yellow to orange with an orange eye
- ✓ <strong>Bloom Time</strong> — Late spring to mid-fall
- ✓ <strong>Growth Habit</strong> — Low-growing, mat-forming perennial, 4-8 inches tall and wide
- ✓ <strong>Drought Tolerance</strong> — High, extremely water-wise
- ✓ <strong>Primary Use</strong> — Ornamental, xeriscaping, rock gardens, erosion control, pollinator attraction
- ✓ <strong>Medicinal Status</strong> — Limited/Unproven medicinal applications; primarily ornamental
1.2.Zinnia Grandiflora — Quick Summary
- ✓ Ornamental perennial native to the Southwestern US and Northern Mexico.
- ✓ Drought-tolerant, low-growing groundcover with bright yellow-orange daisy-like flowers.
- ✓ Primarily valued for its landscape use, xeriscaping, erosion control, and attracting pollinators.
- ✓ Contains beneficial phytochemicals like flavonoids, terpenoids, and phenolic compounds.
- ✓ Medicinal uses for Zinnia grandiflora are not widely documented or scientifically validated.
- ✓ Not recommended for internal medicinal use due to lack of established safety data.
2.Zinnia Grandiflora — Scientific Identity
3.Zinnia Grandiflora — Quick Facts
4.Zinnia Grandiflora — Appearance & Identification
5.Zinnia Grandiflora — Native Habitat
6.Zinnia Grandiflora — Water Requirements
- ✓ Soil Preference — Thrives in well-drained, sandy, rocky, or gravelly soils; tolerates poor fertility, chalk, clay, and loam soil types, but performs poorly in heavy clay or consistently wet conditions.
- ✓ Sun Exposure — Requires full sun exposure, ideally 6-8 hours of direct sunlight per day, for optimal growth and abundant flowering, though it can tolerate partial shade.
- ✓ Watering — Highly drought-tolerant once established; water sparingly, allowing soil to dry out completely between waterings to prevent root rot. Its water needs are very low.
- ✓ Propagation — Primarily propagated by seeds, which can be direct-sown in spring after the last frost or started indoors 4-6 weeks prior. Cuttings or divisions can also be taken in spring.
- ✓ Temperature & Hardiness — Hardy in USDA zones 4-8; tolerates both severe heat, strong winds, and cold temperatures, making it a robust choice for various climates within its range.
- ✓ Maintenance — Low maintenance; deadheading spent flowers can encourage continuous blooming, though it's not strictly necessary for plant health. Generally does not require fertilization.
- ✓ Pests & Diseases — Generally pest and disease resistant, especially when grown in appropriate, well-drained conditions; watch for powdery mildew in excessively humid environments.
- ✓ Landscape Use — Excellent for xeriscaping, rock gardens, native plant gardens, prairies, meadows, slopes, erosion control, and containers, providing long-lasting interest.
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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