Henbane
Hyoscyamus niger · Solanaceae
The gardener's calendar
Ideal time to plant henbane: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Blooming
- June to September, pale yellow flowers with purple veins
- Adult size
- 60 to 100 cm in height
- Growth
- Fast
- Hardiness
- Low hardiness, frost tender in cold climates
- Origin
- Mediterranean basin and Eastern Europe
- Soil type
- Well-drained soil, tolerates poor and chalky soils
Care
Light Exposure
Place your black henbane in full sun or partial shade for optimal growth. It appreciates warm, bright locations, particularly in temperate climates. A south or west-facing exposure will encourage abundant flowering.
Watering
Water regularly during the growing season, keeping the soil moist but not waterlogged. Allow the surface to dry slightly between waterings. Reduce watering in autumn and winter.
Soil Preparation
Use well-drained potting soil enriched with mature compost. Black henbane tolerates poor and chalky soils but thrives better in light, crumbly substrate. Add organic matter in spring to support plant vigor.
Fertilizing
Apply balanced fertilizer every 3 to 4 weeks during the growing season (spring-summer). Prefer a formula low in nitrogen to avoid excessive foliage at the expense of flowering. Stop feeding in autumn.
Pruning and Maintenance
Remove spent flowers regularly to extend the blooming period. Prune foliage lightly in late winter to maintain compact shape. Remove dead or damaged stems at any time.
Pests and Diseases
Watch for whiteflies and spider mites, particularly in indoor cultivation. Root rot can occur if soil remains constantly wet. Ensure good air circulation and avoid overwatering to prevent fungal issues.
Did you know?
Black henbane fascinated medieval sorcerers and alchemists, who incorporated it into ritual ointments. Its potent hallucinogenic properties made it a legendary plant in grimoires, but also a dreaded deadly poison. Today, it remains a botanical curiosity whose handling without gloves or careless manipulation should be avoided.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.