Bitter Leaf (Gymnanthemum amygdalinum)

Bitter Leaf

Gymnanthemum amygdalinum

Its bitter leaves hold medicinal warmth, a hardy edible herb. Perennial shrub; common name: bitter leaf.

Full sun
2–3/week
Beginner
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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 deeply when the top 2 cm of soil feels dry; avoid waterlogging to prevent root rot
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Temperature Thrives in warm tropical temperatures; cannot tolerate frost below 10°C
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Characteristics

  • Leaf: Simple, oval to lanceolate, dark green, serrated margins, bitter-tasting when crushed
  • Flower: Small white to pale purple composite flower heads in terminal clusters
  • Stem: Woody, branching, light brown to grayish bark
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Care Guide

Watering

Keep soil consistently moist; increase frequency during extended dry spells

Fertilization

Apply diluted organic feed every 4 weeks. Prioritize nitrogen-rich feeds to support leaf growth during active growing periods

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Trim dead or yellowing leaves regularly to improve airflow and plant appearance
  • Cut back overgrown branches in early spring to encourage compact, bushy growth
  • Remove spent flower heads to redirect energy toward leaf production
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: No documented toxicity to cats per ASPCA and veterinary databases

Humans: Edible and used in traditional medicine; no documented toxicity with normal consumption

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Garden Uses & Culture

Culture: Used in West African traditional medicine to treat fever, digestive issues, and infections

Usage: Edible leaves for soups, stews, and herbal infusions; ornamental shrub for tropical gardens