Downy Thorn-apple (Datura innoxia)

Downy Thorn-apple

Datura innoxia

Its trumpeting blooms glow like moonlit silk, but hides potent neurotoxins. Night-blooming flowering shrub; common names: downy thorn-apple, Indian apple.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates hot, dry conditions but requires consistent light to support blooming
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Watering Water deeply when the top 5 cm of soil is dry; avoid overwatering to prevent root rot and fungal growth
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Temperature Thrives in warm, temperate to tropical conditions; protect from frost below 10°C as cold temperatures will damage foliage
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Characteristics

  • Leaf: Ovate, velvety (downy) leaves with irregularly lobed margins, up to 20 cm long
  • Flower: Trumpet-shaped white to pale lavender blooms, 15–20 cm long, fragrant and night-blooming
  • Fruit: Spiny, ovoid capsules covered in soft downy hairs, containing numerous black seeds
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Care Guide

Watering

Keep soil evenly moist but not waterlogged; increase watering frequency during periods of extreme heat

Fertilization

Diluted balanced liquid fertilizer every 2 weeks to support blooming. Discontinue fertilization entirely in autumn and winter when growth slows

Banana peel compost tea:Compost banana peels for 2–3 weeks to break down nutrients, steep in water for 24 hours, dilute 1:20 for root drench to support flower development without overfeeding
Pruning
  • Remove spent blooms promptly to encourage continuous flowering throughout the growing season
  • Thin overcrowded branches in early spring to improve airflow and reduce disease risk
  • Cut back leggy stems in late winter to promote compact, bushy growth for the upcoming season
  • Remove any diseased, yellowing, or damaged foliage as soon as it is observed
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Highly toxic; ingestion leads to neurotoxic symptoms and organ damage

Humans: Contains tropane alkaloids; ingestion causes severe neurotoxic effects, potentially fatal in large doses

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Garden Uses & Culture

Culture: Associated with traditional spiritual and ritual use in some Indigenous North American cultures, though modern use is strongly discouraged due to its severe toxicity

Usage: Ornamental for night gardens due to its fragrant, moonlit blooms, but rarely cultivated widely due to safety concerns