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botanical name:
Sonchus oleraceus
Sonchus oleraceus © Deeproot Plant Base
common name:  Common Sowthistle, Smooth Sowthistle, Milk Thistle
family:  Asteraceae
characteristics: annual/biennial
height: 0.80m
width: 0.50m
growth rate: fast
growth habit: erect
leaf colour: green
flower colour: yellow
fruit colour: white
stem/bark: red & green
main season: Summer
medicinal symbol medicinal
aspect: full sun, part shade
conditions: dry soil, moist soil, clay soil, sandy soil
preferred soil pH: any
minimum temp: -29°C
USDA zone: 5 to 10
Common annual or biennial weed of cultivated and waste ground. Leafy, upright habit with thick hollow stems and large toothed, greyish green leaves. Shallow rooted. Stems and leaves often have a reddish tinge. Has white milky sap.
Clusters of pale yellow, dandelion-like flowers about 25mm across.
Similar to the Prickly Sowthistle but with flatter, smoother leaves, more rounded when young.

Will grow in a wide range of conditions.

From seed.

Has been commonly used as a medicinal herb.

other notes:
European native, widely naturalised elsewhere.

pronounced: SON-chus awl-lur-RAY-see-us
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