Common Mugwort (Artemisia vulgaris)

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Sunlight Full sun to partial shade; thrives in open, unshaded areas and tolerates dry, nutrient-poor soils

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Watering Allow the top 2–3 cm of soil to dry completely between waterings; avoid overwatering to prevent rhizome rot

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Temperature Hardy to -15°C; withstands hot, dry summer conditions without supplemental watering

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Leaf: Dark green upper surface, silvery-white pubescent underside; deeply lobed, lanceolate to ovate.
Flower: Small, clustered yellow-green disc florets in terminal panicles; no ray florets.
Stem: Erect, ridged, covered in fine silvery hairs.

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Watering

Water deeply when topsoil is dry to the touch

Fertilization

Apply diluted organic feed once at the start of growth. Avoid high-nitrogen fertilizers to prevent leggy, weak growth

Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle 1 tsp per plant around the base and water lightly to incorporate into soil

Pruning

Deadhead spent flower heads to prevent unwanted self-seeding
Cut back stems to ground level in late autumn to promote vigorous spring regrowth
Thin overcrowded rhizome clumps every 2–3 years to improve airflow

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains thujone, causing gastrointestinal and neurological symptoms

Humans: Ingestion may cause mild gastrointestinal upset; allergic contact dermatitis in sensitive individuals

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Culture: Used in traditional medicine, culinary seasonings, and historical ritual practices across Europe and Asia

Usage: Herbal tea, natural insect repellent, and ornamental ground cover in wild garden designs