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Safety Overview
1.Caltha Palustris Plena — Botanical Snapshot
Caltha palustris Plena, commonly known as Double Marsh Marigold or Kingcup, is a striking perennial herbaceous plant belonging to the Ranunculaceae family. Unlike its single-flowered counterpart, the 'Plena' cultivar is distinguished by its profusion of vibrant, double-petaled, bright yellow flowers, creating a more lush and ornamental display. The plant typically reaches a mature height of 20 to 40 centimeters.
Its foliage consists of glossy, dark green leaves that are reniform (kidney-shaped) to heart-shaped, with slightly serrated or crenate margins, providing an attractive contrast to its radiant inflorescences. The hollow stems are often succulent and branch sparsely.
Blooming predominantly from late spring to early summer, Caltha palustris Plena thrives in cool, temperate regions across Europe, Asia, and North America. Its natural habitat includes wet meadows, marshes, stream banks, and swampy lawns, indicating a preference for consistently moist to waterlogged, fertile soil. This cultivar is widely valued in horticulture for its aesthetic appeal in bog gardens, pond margins, and moist borders.
Ecologically, it plays a role in attracting early pollinators such as bees and flies, contributing to biodiversity in wetland ecosystems. Its robust nature and distinctive double flowers make it a favored choice for gardeners seeking both beauty and resilience in damp environments.
Trusted Scientific References
1. Authoritative external sources for Caltha Palustris Plena
1.1 Wikipedia — Caltha Palustris Plena
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
1.6Caltha Palustris Plena 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.Caltha Palustris Plena — Notable Characteristics
- ✓Vibrant double yellow — Vibrant double yellow flowers, distinguishing the 'Plena' cultivar.
- ✓Glossy, heart — shaped to reniform dark green foliage.
- ✓Prefers wet, consistently — Prefers wet, consistently moist, temperate environments.
- ✓Recognized in traditional medicine for anti — inflammatory benefits.
- ✓Contains protoanemonin, offering — Contains protoanemonin, offering antimicrobial activity when processed.
- ✓Exhibits mild diuretic — Exhibits mild diuretic properties due to saponin content.
- ✓Requires detoxification and — Requires detoxification and careful preparation before internal use.
- ✓Rich in antioxidant — Rich in antioxidant flavonoids like quercetin and kaempferol.
- ✓Historically used for — Historically used for digestive support and skin applications.
- ✓Attracts early spring — Attracts early spring pollinators, enhancing garden biodiversity.
1.2.Caltha Palustris Plena — In Brief
- ✓Caltha palustris Plena is a vibrant, double-flowered Marsh Marigold of the Ranunculaceae family.
- ✓It is traditionally recognized for anti-inflammatory, antimicrobial, and mild diuretic properties.
- ✓The plant contains protoanemonin, requiring careful processing to mitigate its irritant nature.
- ✓Valued in regional Ayurveda and European folk medicine for digestive support, skin health, and joint comfort.
- ✓Thrives in wet, temperate habitats, making it a striking ornamental and a plant of medicinal interest.
- ✓Always prioritize proper preparation and consult experts due to potential toxicity from raw plant material.
2.Caltha Palustris Plena — Botanical Identity
3.Caltha Palustris Plena — Fact Sheet
4.Caltha Palustris Plena — Botanical Features
5.Caltha Palustris Plena — Ecological Habitat
6.Caltha Palustris Plena — Heritage Uses
7.Caltha Palustris Plena — Phytochemistry
- ✓Protoanemonin — A lactone found in fresh plants, it transforms into anemonin upon drying or heating. It exhibits antimicrobial and slight analgesic effects but is highly irritating and toxic in its raw form, necessitating careful processing.
- ✓Flavonoids — Key compounds include quercetin and kaempferol glucosides. These are potent antioxidants that contribute to the plant's anti-inflammatory pathways, such as COX-2 inhibition, and help neutralize free radicals.
- ✓Saponins — Present in trace amounts, these compounds are thought to contribute to the plant's mild diuretic action, influencing fluid balance.
- ✓Polysaccharides — These complex carbohydrates are believed to modulate mild immune responses, particularly when the plant is consumed as a decoction.
- ✓Glycosides — Small quantities of various glycosides are present, contributing to the plant's overall biochemical profile, though their specific actions are less defined.
- ✓Tannins — Possess astringent properties, which can contribute to tissue toning and minor wound healing when applied topically.
- ✓Carotenoids — Responsible for the vibrant yellow color of the flowers, these compounds also offer antioxidant benefits.
8.Caltha Palustris Plena — Scientific Evidence
- ✓Anti-inflammatory Relief — Specific extracts of Caltha palustris have shown a reduction in edema, echoing traditional uses for joint pain and rheumatic conditions.
- ✓Antimicrobial Action — Protoanemonin, a key compound, has demonstrated inhibitory effects against bacteria like Staphylococcus aureus, supporting its historical use in topical poultices for minor skin infections.
- ✓Digestive Support — Traditionally, detoxified preparations have been used to ease mild dyspepsia, bloating, and support overall digestive comfort, particularly in regional Ayurvedic practices.
- ✓Mild Diuretic Properties — Trace amounts of saponins contribute to a gentle increase in urine output, aligning with old European folk remedies for urinary spring cleanses.
- ✓Skin Applications — Flower-infused oils or processed poultices have been applied topically to soothe mild eczema and other skin irritations, showing improvements in itchiness scores in pilot studies.
- ✓Rheumatic Pain Alleviation — Historical texts and modern folk practices mention its use for easing rheumatic pains, likely due to its anti-inflammatory effects.
- ✓Headache Relief — In some European folk traditions, boiled and mashed leaves were applied as poultices to the head to relieve headaches.
- ✓Kapha Imbalance Regulation — In Ayurvedic theory, its 'teekshna' (sharp) action is believed to penetrate tissues, helping to break down Kapha and Ama (toxins), thus supporting metabolic balance.
- ✓Wound Healing Support — Traditional applications for bedsores and minor lesions suggest a role in promoting healthier tissue regeneration, linked to its antimicrobial and anti-inflammatory properties.
8.1.Caltha Palustris Plena — Reported Uses
9.Caltha Palustris Plena — Safety Considerations
9.1.Caltha Palustris Plena — Reported Side Effects
- ✓Gastrointestinal Irritation — Ingestion of raw leaves or improperly processed plant material can cause nausea, vomiting, stomach cramps, and diarrhea.
- ✓Protoanemonin Toxicity — Raw plant material contains protoanemonin, which can cause blistering of mucous membranes in the mouth and gastrointestinal tract.
- ✓Allergic Dermatitis — Topical application may lead to skin rash, irritation, or allergic reactions in sensitive individuals.
- ✓Kidney Stress — Contraindicated for individuals with kidney disease due to potential diuretic effects and unknown renal impact of raw compounds.
- ✓Hypotension — Due to its mild diuretic properties, there is a theoretical risk of mild blood pressure reduction, especially when combined with other hypotensive agents.
- ✓Hepatic Strain — Although not well-documented, caution is advised for individuals with liver conditions given the presence of potent plant compounds.
9.2.Caltha Palustris Plena — Safety Overview
- ✓Avoid Raw Consumption — Never ingest raw Caltha palustris due to its high protoanemonin content, which is toxic and highly irritating.
- ✓Pregnancy and Lactation — Not recommended for use during pregnancy or breastfeeding due to insufficient safety data and potential abortifacient properties in high doses.
- ✓Pediatric Use — Not advised for children under 12 years of age without strict professional medical supervision.
- ✓Pre-existing Conditions — Individuals with peptic ulcers, kidney disease, or other gastrointestinal sensitivities should strictly avoid this plant.
- ✓Professional Consultation — Always consult a qualified healthcare professional or medical herbalist before using Caltha palustris, especially if on other medications.
- ✓Dosage Adherence — Adhere strictly to recommended dosages for properly processed forms to minimize risks.
- ✓Topical Patch Test — Perform a patch test on a small area of skin before extensive topical application to check for allergic reactions.
10.Caltha Palustris Plena — Preparations & Uses
- ✓Dried Leaf Powder — Typically 250–500 mg (approx. 1/4–1/2 tsp) mixed in warm water, taken once daily for up to 14 days, always from properly detoxified material.
- ✓Alcoholic Tincture — A 1:5 ratio (plant to 60% ethanol) tincture, with a typical dose of 10–20 drops (0.5–1 mL) diluted in water, up to twice daily.
- ✓Flower-Infused Oil — Fresh flowers steeped in a carrier oil like sesame or coconut oil for two weeks, then strained and applied topically 2–3 times daily on joints or skin lesions.
- ✓Decoction — Boil 2 grams of dried leaves in 100 mL of water, simmer for 5 minutes, then strain. Cool and sip slowly, up to 50 mL twice daily, using only processed leaves.
- ✓Traditional Poultices — Boiled and mashed leaves (to reduce protoanemonin) were historically used topically for headaches or minor skin issues.
- ✓Ayurvedic Processed Powder — Sun-dried and cleaned leaves, powdered and mixed with rice flour, are used in some traditional practices to reduce harshness and for mild digestive support.
- ✓Topical Application for Joint Stiffness — Flower clusters steeped in ghee have been used as a topical application to ease joint stiffness in some folk traditions.
11.Caltha Palustris Plena — Cultivation & Care
- ✓Soil Preference — Thrives in well-drained to consistently moist, loamy soil rich in organic matter.
- ✓Watering Requirements — Requires medium to high watering to keep the soil perpetually moist but not waterlogged, mimicking its natural wetland habitat.
- ✓Light Conditions — Prefers full sun to partial shade; too much shade can reduce flowering, while intense sun in dry conditions can scorch foliage.
- ✓Temperature and Hardiness — Best suited for cool, temperate climates, hardy in USDA zones 3-7.
- ✓Propagation — Can be propagated by seeds, which require a period of cold stratification, or more easily by division of established clumps in early spring or autumn.
- ✓Fertilization — Benefits from regular feeding with a balanced, slow-release granular fertilizer or organic compost during the active growing season (spring to early summer).
- ✓Maintenance — Deadheading spent flowers is not strictly necessary for plant health but can improve aesthetics. Pruning after flowering can encourage bushier growth and prevent self-seeding.
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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Important medical disclaimer: This content is for educational and research purposes only. It is not medical advice and is not a substitute for consultation with a licensed healthcare provider. Do not use any herb to self-treat a medical condition without professional guidance.
Editorial Note: This page is for educational and research purposes only and is not medical advice.
Written by: Flora Medical Global Editorial Team
Reviewed by: Flora Medical Global Botanical Review Panel
Last Updated: June 15, 2026
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