Lesser Burdock (Arctium minus)

Lesser Burdock

Arctium minus

Its burrs cling softly to passersby, a quiet story of seed dispersal. Biennial herbaceous plant; common name: small burdock.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Prefers full sun to partial shade; tolerates dappled shade in hot summer climates
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Watering Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot
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Temperature Hardy to light frost; tolerates short-term temperatures as low as -10°C; thrives in 15–25°C
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Characteristics

  • Leaf: Large, heart-shaped basal leaves with woolly undersides; upper leaves smaller, alternate
  • Flower: Round purple thistle-like flower heads, 1–2 cm in diameter
  • Stem: Erect, branched, covered in fine hairs
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Care Guide

Watering

Keep soil consistently moist during active vegetative growth

Fertilization

Diluted balanced feed once every 4 weeks. Skip fertilization in poor soils to prevent excessive leaf growth at the expense of flower development

Banana peel compost tea:Steep fully composted banana peels in water for 24 hours; dilute 1:20 for root drench to support robust leaf and flower growth
Pruning
  • Remove yellowing basal leaves to improve airflow and reduce fungal growth
  • Deadhead spent flower heads to limit excessive self-seeding in managed gardens
  • Cut back stems to ground level after seed dispersal in late autumn to clear debris
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no known adverse effects from ingestion

Humans: Non-toxic to humans; young leaves and roots are edible when prepared properly

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Garden Uses & Culture

Culture: N/A

Usage: Young leaves and peeled taproots are edible; used in traditional herbal remedies for skin conditions