Bloodroot (Sanguinaria canadensis)

Bloodroot

Sanguinaria canadensis

Its pure white blooms unfurl like fragile stars before leaves emerge. Spring-blooming perennial wildflower; common name: bloodroot.

Partial sun
1/week
Moderate
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Plant Needs

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Sunlight Prefers dappled woodland shade or partial sun; avoid harsh midday summer sun which can scorch foliage
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Watering Keep soil evenly moist during active growth; reduce watering completely after foliage dies back in late spring
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Temperature Extremely cold-hardy, tolerating temperatures as low as -30°C; requires a cold dormancy period for spring blooming
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Characteristics

  • Leaf: Single, lobed, roundish basal leaf wraps around flower stalk before blooming; emerges fully after flowers fade
  • Flower: 2–5 cm wide white blooms with 8–12 petals and bright golden stamens
  • Rhizome: Fleshy underground stem with bright red-orange sap when cut, giving the plant its common name
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Care Guide

Watering

Maintain consistent soil moisture without waterlogging; apply mulch to retain moisture

Fertilization

Apply a diluted organic liquid feed once at emergence. Use a low-nitrogen feed to promote flowering rather than excessive foliage growth

Composted banana peel tea:Use fully composted banana peels steeped in water; dilute 1:20 for root drenching to avoid burning delicate roots
Pruning
  • Remove spent flower stalks after blooming to direct energy to rhizome growth
  • Clear yellowing or dead foliage in late summer to reduce fungal spore buildup
  • Divide overcrowded rhizome clumps in early spring before new growth emerges
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion may cause vomiting, diarrhea, depression, tremors, or respiratory distress

Humans: Contains sanguinarine alkaloids; ingestion causes oral irritation, nausea, vomiting, and diarrhea; skin contact may cause redness or blistering

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Garden Uses & Culture

Culture: Used by Indigenous North American peoples as a red dye for textiles and body paint; symbolizes purity and sacrifice in some cultural contexts

Usage: Ornamental woodland garden plant; historical medicinal uses are not recommended due to toxicity risks