Veratrum lobelianum
Veratrum lobelianum · Melanthiaceae
The gardener's calendar
Ideal time to plant veratrum lobelianum: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- Summer (June to August)
- Adult size
- 80 cm to 1.5 m in height
- Growth
- Moderate to slow
- Hardiness
- Very hardy (down to -20°C)
- Origin
- Central and southern Europe
- Soil type
- Moist, fresh, well-drained
Care
Watering
Keep the soil fresh and moist, especially during the growing season and in dry summers. Water regularly without creating waterlogging. In winter, reduce watering once the foliage has disappeared. Consistent moisture promotes better growth.
Light exposure
Plant in partial shade or light shade, where the plant benefits from indirect light. Veratrum lobelianum also tolerates partially shaded woodland areas. Avoid overly sunny exposures, especially in Mediterranean climates.
Soil
Prefer soil rich in organic matter, slightly acidic to neutral, fresh and well-structured. Adding compost or potting soil at planting significantly improves establishment. Ensure good drainage to prevent root asphyxia.
Fertilizer
Apply balanced or potassium-enriched fertilizer at the start of spring when growth resumes. One application is usually sufficient for the season. Decomposed mulch progressively enriches the soil with nutrients.
Pruning and cutting
No pruning is necessary. Simply remove spent flowers after flowering if you wish to prevent self-seeding. Let the foliage yellow naturally in autumn before cutting it back to ground level.
Diseases and pests
Veratrum lobelianum is generally very hardy and rarely subject to diseases. Occasionally watch for slugs that can damage young shoots. Excess standing moisture can promote root rot; ensure adequate drainage.
Did you know?
Veratrum lobelianum has been known since antiquity for its toxic properties: the Greeks and Romans used it as poison, notably for arrows. Despite its danger, the plant fascinated medieval botanists who cultivated it in apothecary gardens to study its properties.
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.
Add this plant to my garden →Plants from the same family
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- False helleboreVeratrum viride
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Tips generated and checked by Viridia — adapt them to your local climate.