American Nightshade (Solanum americanum)

American Nightshade

Solanum americanum

Tiny white blooms cluster like delicate stars, bearing small edible berries when ripe. Annual or short-lived perennial herb; common name: glossy nightshade.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Prefers full sun to partial shade; tolerates dappled light in warm climates
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Watering Water when top 2–3 cm of soil is dry; avoid overwatering to prevent root rot
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Temperature Thrives in warm temperate to tropical temperatures; avoid frost exposure
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Characteristics

  • Leaf: Simple, ovate to lanceolate leaves with smooth margins; glossy green, 2–10 cm long
  • Flower: Small white star-shaped blooms in clusters of 3–10; 5 petals fused at the base
  • Fruit: Round berries, green when unripe turning shiny black when mature (6–8 mm diameter)
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Care Guide

Watering

Keep soil consistently moist but not waterlogged

Fertilization

Diluted balanced feed every 2 weeks. Cease fertilization in autumn and winter when growth slows

Banana peel compost tea:Soak fully composted banana peels in water for 24 hours; dilute 1:20 for root drench to support fruit development
Pruning
  • Pinch back young shoots to encourage bushier growth
  • Remove yellowing or damaged leaves to improve airflow
  • Deadhead spent blooms to promote additional flowering
  • Thin overcrowded stems to reduce disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion of unripe berries or leaves may cause gastrointestinal irritation

Humans: Unripe berries and leaves contain solanine and calcium oxalate; ripe berries are generally safe for human consumption in small amounts

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Garden Uses & Culture

Culture: N/A

Usage: Ripe berries used in traditional medicine in some regions; ornamental ground cover