White Henbane (Hyoscyamus albus)

White Henbane

Hyoscyamus albus

Its fuzzy foliage hides potent alkaloids, a quiet but dangerous beauty. Biennial herbaceous plant; common name: white henbane.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates dry, rocky soils and low humidity
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Watering Water deeply but infrequently; allow top 2–3 cm of soil to dry between waterings to prevent root rot
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Temperature Thrives in temperate to warm climates; basal rosettes tolerate mild frost during dormancy
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Characteristics

  • Leaf: Basal rosette leaves are ovate, fuzzy, with toothed margins; stem leaves are smaller, clasping
  • Flower: Creamy-white to pale yellow tubular flowers with purple veins, arranged in leafy spikes
  • Stem: Covered in dense, sticky, glandular hairs
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Care Guide

Watering

Keep soil slightly moist during active growth; avoid waterlogging

Fertilization

Diluted balanced liquid feed once monthly. Use only diluted, low-strength feed to prevent excessive foliage growth

Composted eggshell powder:Sprinkle a thin layer on soil surface; avoid direct contact with foliage to prevent burning and fungal issues
Pruning
  • Remove spent flower spikes to prevent unwanted self-seeding
  • Thin overcrowded basal rosettes to improve airflow and reduce disease risk
  • Cut back dead foliage in late autumn after dormancy sets in
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-listed toxic; ingestion leads to hallucinations, seizures, respiratory depression

Humans: Contains tropane alkaloids (hyoscyamine, scopolamine); ingestion causes serious neurological and cardiovascular effects

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Garden Uses & Culture

Culture: N/A

Usage: Historically used in traditional medicine (highly toxic, not recommended for modern use); sometimes grown as a curiosity plant