Bitter Leaf (Vernonia amygdalina)

Bitter Leaf

Vernonia amygdalina

Its bitter leaves hold medicinal and culinary value, a hardy tropical herbaceous perennial; common name: bitter leaf.

Full sun
2/week
Moderate
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Plant Needs

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Sunlight Full to partial sun; tolerates dappled shade in hot tropical climates to prevent leaf scorch
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Watering Water thoroughly when the top 2–3 cm of soil is dry; avoid waterlogging to prevent root rot
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Temperature Thrives in warm tropical temperatures; cannot tolerate frost or temperatures below 10°C
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Characteristics

  • Leaf: Simple, elliptical to lanceolate leaves with serrated margins; dark green, glossy upper surface
  • Flower: Small purple to lavender composite flower heads arranged in terminal clusters
  • Stem: Erect, woody at base, branching upper stems with fine pubescence
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Care Guide

Watering

Keep soil consistently moist but not saturated

Fertilization

Diluted organic feed every 2 weeks. Avoid over-fertilizing to prevent excessive leaf growth at the expense of flowering

Banana peel compost tea:Compost banana peels for 2 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Trim dead flower heads to encourage bushier, more compact growth
  • Remove yellowing lower leaves to improve airflow and reduce disease risk
  • Cut back overgrown stems by one-third in early spring to maintain desired height
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: No known toxicity to cats per ASPCA guidelines

Humans: Generally safe for culinary/medicinal use in moderation; excessive consumption may cause mild gastrointestinal upset

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Garden Uses & Culture

Culture: Used in traditional African medicine to treat fever, gastrointestinal issues, and malaria symptoms

Usage: Culinary herb (cooked to reduce bitterness), medicinal plant, and ornamental garden specimen