Wormwood
Artemisia absinthium · Asteraceae
📷 David Monniaux · CC BY-SA 3.0
⚠️ Plante entière contient thuyone neurotoxique. Chiens/chats risquent tremblements, convulsions; enfants signes neurologiques en ingestion.
Wormwood is a semi-woody perennial herb with finely divided, silvery-green foliage and pale yellow flowers. It's a robust, drought-tolerant plant that thrives in poor, well-drained soils and is perfect for Mediterranean-style gardens or xeriscaping projects.
The gardener's calendar
Ideal time to plant wormwood: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Scientific name
- Artemisia absinthium
- Family
- Asteraceae
- Type
- Semi-woody perennial herb
- Mature height
- 80 to 120 cm
- Foliage
- Deciduous, silvery-green, very finely cut
- Flowering
- July to September, small pale yellow flowers
- Hardiness
- Very hardy, down to -20 °C
- Origin
- Mediterranean region and temperate Asia
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Wormwood dreads stagnant moisture far more than drought: plant it in well-draining soil, ideally gravelly. A short pruning in late winter (February-March) keeps it from sprawling into a gawky, open mess.
The common mistake
Most gardeners overwater wormwood 'to help it grow well': it will inevitably rot in soggy soil or during a wet winter without proper drainage.
The pro's trick
Pinch the stems in June to force branching and get a compact plant; without this move, you'll end up with a spindly central stem and poor density.
Seasonal watch
In damp autumn-winter, watch for collar rot: if the base starts to blacken, it's done for.
Care
Exposure and climate
Wormwood demands full sun exposure (at least 6 hours of direct sunlight daily) to develop properly. It tolerates hot, dry situations very well and especially dislikes damp shade. Plant it in well-drained soil, away from areas where water pools in winter.
Watering
After establishment, water only moderately and only during prolonged drought. Wormwood prefers dry soil and needs water only rarely once established. Absolutely avoid watering the foliage to prevent fungal diseases.
Soil and preparation
Poor to average, well-drained and somewhat chalky soil suits it perfectly. Amend if necessary with gravel or sand to improve drainage. Avoid overly rich, organic-heavy soils, which promote soft growth and disease susceptibility.
Pruning and maintenance
Cut the plant back to 30-40 cm from the ground in late winter (February-March) to encourage compact branching. You can also pinch regularly in summer to limit height and densify the shape. Remove spent flowers to maintain vigor.
Nutrition
Wormwood needs no fertilizer on established soil. Excessive nitrogen makes it soft and prone to pests. A little well-broken compost in early spring is more than enough.
Problems and prevention
Wormwood especially dreads waterlogged soil, which causes root rot and fungal diseases. Ensure impeccable drainage and good air circulation. Pests are rare thanks to the plant's repulsive scent.
Did you know?
Wormwood is deeply linked to 19th-century Parisian bohemian culture: consumed diluted as a green alcoholic drink, it inspired countless artists and writers before being banned in France in 1915, mainly due to its thujone, supposedly hallucinogenic. Today rehabilitated and legalized, it remains the quintessential cursed herb, a symbol of romantic excess.
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.