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© Deeproot Plant Base
common name: Common Sowthistle, Smooth Sowthistle, Milk Thistle
red & green
full sun, part shade
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.
Has been commonly used as a medicinal herb.
European native, widely naturalised elsewhere.
pronounced: SON-chus awl-lur-RAY-see-us