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1.Creeping Jenny — Overview
Creeping Jenny, known scientifically as Lysimachia nummularia, is an enchanting perennial herbaceous plant celebrated for its vigorous, mat-forming growth habit. A member of the Primulaceae family, this species features slender, prostrate stems that can extend several feet, readily rooting at the nodes when they encounter moist soil, facilitating its rapid and expansive spread. The distinctive foliage consists of opposite, nearly sessile, orbicular to kidney-shaped leaves, giving rise to its 'moneywort' common name (nummularia means 'coin-like').
These leaves possess a glossy, vibrant yellow-green hue, which can deepen to a rich golden-bronze in cooler temperatures or under higher light exposure. Their margins are entire, and translucent glandular dots are often visible when held against light.
Flowering typically occurs from late spring through early summer, producing solitary, cup-shaped, bright yellow flowers that emerge from the leaf axils. Each bloom measures approximately 1 inch (2.5 cm) in diameter, characterized by five distinct petals and five prominent stamens, attracting various pollinators like bees. Its shallow, fibrous root system is well-adapted to its groundcover role, providing secure anchorage across diverse soil types and supporting its clonal expansion.
Native to a broad area of Europe, including the British Isles, extending to southeastern Europe and parts of Western Asia, Creeping Jenny thrives in moist, well-drained conditions such as stream banks, damp meadows, and woodland edges. Its remarkable adaptability has led to its naturalization in many other temperate regions globally, notably North America, where its aggressive growth can sometimes render it an invasive species in suitable habitats. Taxonomically, its placement within the Primulaceae family underscores its evolutionary ties to other significant genera like Primula, highlighting shared botanical characteristics.
Trusted Scientific References
Authoritative external sources for Lysimachia nummularia:
1.1.Creeping Jenny — Key Features
- Vigorous Groundcover — Lysimachia nummularia forms a dense, rapidly spreading mat, effectively suppressing weeds.
- Coin — Shaped Foliage — Features glossy, orbicular to kidney-shaped leaves, giving it a unique visual appeal.
- Bright Yellow Blooms — Produces cheerful, cup-shaped yellow flowers from late spring to early summer.
- Moisture — Loving Plant — Thrives in consistently moist to wet soil conditions, suitable for damp areas.
- Extreme Hardiness — Resilient in temperate climates, tolerating cold down to USDA zone 4.
- Traditional Wound Herb — Renowned in folk medicine for its external healing properties on cuts and wounds.
- Natural Astringent — Helps to constrict tissues and reduce fluid discharges, beneficial for various conditions.
- Mild Diuretic Action — Supports kidney function and aids in reducing fluid retention.
- Source of Vitamin C — Historically used to combat scurvy due to its nutritional content.
- Easy to Cultivate — Low maintenance and adaptable, making it a popular choice for gardens and landscapes.
1.2.Creeping Jenny — Quick Summary
- Botanical Profile — Creeping Jenny is a vigorous, mat-forming perennial with distinctive coin-shaped leaves and bright yellow flowers.
- Traditional Medicinal Uses — Historically valued for its vulnerary, astringent, diuretic, and antiscorbutic properties in European folk medicine.
- Key Applications — Primarily used topically for wound healing and internally as an infusion for diarrhea, internal bleeding, and fluid retention.
- Cultivation Ease — An adaptable and hardy plant, thriving in moist soils and varying light conditions, often used as an ornamental groundcover.
- Safety Considerations — Generally considered low-hazard for external use, but internal consumption requires caution, especially for pregnant individuals or those on medication.
2.Creeping Jenny — Scientific Identity
3.Creeping Jenny — Categories & Tags
4.Creeping Jenny — Appearance & Identification
5.Creeping Jenny — Water Requirements
- Soil Preference — Creeping Jenny thrives in moist to wet, well-drained soils, adapting well to loamy, heavy clay, and even marshy conditions; it prefers neutral to mildly alkaline pH.
- Light Requirements — This versatile plant can grow in semi-shade to full sun, though its foliage color may intensify to golden-bronze under higher light exposure.
- Watering Needs — Requires consistently moist conditions and can even be cultivated in shallow water at pond margins, making it ideal for bog gardens.
- Hardiness Zone — Lysimachia nummularia is remarkably hardy, tolerating temperatures down to at least -25°C, suitable for USDA hardiness zones 4-8 and UK zone 4.
- Propagation Method — Primarily propagated by division in spring or autumn, as it readily roots along its spreading stems; seed production is less common.
- Planting Spacing — For groundcover, space plants approximately 60 cm (2 feet) apart; they will quickly spread to form a dense, rooting carpet.
- Pest Resistance — Notably, Creeping Jenny exhibits resistance to common garden pests, including predations by rabbits, making it a low-maintenance choice.
- Initial Establishment — While generally vigorous, it benefits from weeding during its first year to prevent competition and ensure robust establishment.
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.
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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 28, 2026
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