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common name: Tansy, Golden Buttons
synonyms: Chrysanthemum vulgare, Chrysanthemum tanacetum, Tanacetum aubiderti
poisonous or irritant
full sun, part shade
dry soil, moist soil, clay soil, sandy soil
preferred soil pH: neutral
minimum temp: -23°C
USDA zone: 6 to 10
Short-lived herbaceous perennial with aromatic, finely divided pinnate leaves. Heads of button-like golden yellow flowers in summer.
Most well drained soils in sun or part shade. Not fussy.
Can be invasive.
From seed or by division.
Once commonly used as a medicinal herb, despite being poisonous in large amounts.
European wildflower, widely naturalised elsewhere.
pronounced: TAN-uh-SEE-tum vul-GAR-ee
All parts are toxic if ingested in fairly large quantities.