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Ranunculaceae HERB OUTDOOR Placement Primary: Ornamental Medicinal Other

Lesser Celandine

Ficaria verna

Identified By Marcs

Lesser Celandine is a low-growing, hairless perennial herb belonging to the buttercup family Ranunculaceae. It is widely recognized for its glossy, dark green heart-shaped leaves and bright yellow, star-like flowers that emerge in early spring. Native to Europe and western Asia, it has been introduced to North America where it frequently acts as an aggressive invasive species in moist woodlands and floodplains. The plant spreads rapidly via underground tubers and bulbils, often forming dense carpets that crowd out native spring ephemerals before dying back by early summer.

Also known as: Pilewort Fig Buttercup Ranunculus ficaria

Toxicity & Safety

Is Lesser Celandine toxic to pets?

Yes, toxic to pets.

Lesser Celandine is toxic to pets, including cats, dogs, and horses, due to the presence of protoanemonin and other irritant compounds. Ingestion of any part of the plant can cause severe irritation of the mouth, excessive drooling, vomiting, diarrhea, abdominal pain, and blistering of the mucous membranes. If you suspect your pet has ingested this plant, it is important to contact a veterinarian immediately for professional medical advice and supportive treatment.

Is Lesser Celandine toxic to humans?

Yes, toxic to humans.

The plant is toxic to humans when ingested raw, primarily due to the blistering toxin protoanemonin, which irritates the digestive tract and can cause nausea, vomiting, dizziness, and bloody diarrhea. Handling the fresh plant can also cause skin irritation and contact dermatitis in sensitive individuals. Although historical folk medicine used the plant, toxicity risks make self-administration dangerous. Cooking or drying breaks down the toxin, but consumption is strongly discouraged due to variable potency and severe health risks.

Is Lesser Celandine safe during pregnancy?

Caution advised during pregnancy.

Lesser Celandine is considered harmful and unsafe during pregnancy and breastfeeding due to toxic compounds like protoanemonin. Ingestion can cause systemic toxicity, severe gastrointestinal distress, and uterine contractions or other complications that pose serious risks to both the mother and the developing fetus. Pregnant and nursing individuals must strictly avoid handling without protection and any internal consumption of this plant or herbal preparations derived from it.

Growth & Dimensions

Height 5 - 20 cm
Width 10 - 30 cm
Growth Rate Fast
Care Level Easy
Lifespan Perennial

Ideal Environment

Temperature -20°C - 25°C
Sunlight Hours 3 - 8 hrs/day
Sun Exposure Partial shade
Soil pH 5.5 - 7.5
Watering Interval 3 - 7 days
Humidity 40.00% - 80.00%
USDA Zone 4a - 9b

Temperate Woodlands and Floodplains

Climate: Favors temperate climates with cool, wet springs and mild winters, frequently found near streams, damp forests, and shaded lawns.

Soils: Loam Clay Moist Alluvial Soil
Annual Rainfall: 600 - 1400 mm

Native Regions

Europe
Western Asia
Northwest Africa

How to Care for Lesser Celandine

How should I handle sunlight management?

Lesser Celandine thrives best in partial shade locations mimicking its native woodland habitat. It can tolerate full sun as long as the soil remains consistently moist, but excessive direct afternoon sun in warmer climates may cause the foliage to wither prematurely before completing its natural spring lifecycle.

How should I handle moisture control?

Ensure the soil remains consistently damp, especially during active spring growth. Since it is naturally adapted to floodplains and moist soils, it appreciates regular watering if natural rainfall is lacking. Reduce watering drastically as the plant enters its natural summer dormancy period.

How to Propagate Lesser Celandine

How to propagate Lesser Celandine by division?

Propagation is typically achieved naturally or artificially through the separation of underground tubers and aerial bulbils. To divide, carefully dig up established clumps during the dormant summer period or early autumn. Separate the clusters of small, finger-like tubers, ensuring each section has viable growth nodes attached, and immediately replant them in moist soil at a shallow depth. Because the plant is highly invasive in many regions outside its native range, extra care should be taken to prevent accidental spread into natural ecosystems during any propagation activities.

Common Diseases & Pests of Lesser Celandine

What is Rust Fungus and how is it treated?

Fungal
Symptoms:

Rust fungus presents as small, powdery, orange, yellow, or brown pustules on the undersides of leaves and stems. Affected leaves may turn yellow, distort, and drop prematurely, weakening the overall vigor of the plant population during its growing season.

Treatment:

Remove and securely dispose of heavily infected leaves to prevent the fungal spores from spreading further. Apply an appropriate organic or systemic fungicide if the infection is widespread and causing significant damage to the plant colonies.

Prevention:

Maintain adequate spacing between plants to encourage good air circulation, and avoid overhead watering which can splash fungal spores between foliage. Clear away old plant debris at the end of the season to reduce overwintering fungal inoculum.

Properties & Benefits of Lesser Celandine

Uses & Health Benefits

What are the benefits of historical medicinal usage in Lesser Celandine?

Historically, Lesser Celandine was utilized in herbal medicine primarily as a treatment for hemorrhoids, earning it the common name pilewort. Extracts and poultices made from the roots and leaves were traditionally applied topically to soothe swollen tissues and reduce discomfort. Modern phytotherapy generally discourages its internal use due to significant toxicity concerns associated with protoanemonin, though historical applications relied on its astringent properties.

Precautions: Not recommended for internal use. Fresh plant material can cause severe skin irritation, blistering, and systemic toxicity if ingested. Consult a medical professional before utilizing any traditional herbal remedies.

Key Nutrients / Compounds

Protoanemonin high Active toxin present in fresh plant

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