Irish Native Henbane (Hyoscyamus niger), known in Irish as Gafann, is a rare and historically significant biennial plant native to Ireland. Once widespread, it is now primarily found in coastal regions, thriving on dry, calcareous soils such as shingle beaches and sandy waste grounds .
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This plant features erect, sticky-hairy stems reaching heights of 40–90 cm, with coarsely toothed, lobed leaves. From June to September, it produces distinctive trumpet-shaped, creamy-yellow flowers veined with dark purple-brown, emitting a strong, foetid odor.
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Historically, Henbane was utilized in traditional medicine for its analgesic and sedative properties, treating ailments like asthma and muscular spasms. However, due to its high toxicity, it is no longer used internally and should be handled with caution
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Horticultural Points

• Height: 40–90 cm
• Bloom Time: June to September
• Flower Color: Creamy-yellow with dark purple-brown veins
• Soil Preference: Dry, calcareous soils
• Sunlight: Full sun
• Native Region: Ireland

Caution: All parts of Henbane are highly toxic. Handle with gloves and keep away from children and pets.