A Eurasian plant with yellow flowers, leaves that resemble those of the thistle, and milky sap.
Genus Sonchus, family Compositae
Also called milk thistle
Example sentencesExamples
- In South Dakota, perennial sowthistle is concentrated in the northeast and eastern areas of the state.
- Many people mistakenly group the annual and perennial sowthistles into two species rather than four.
- Perennial sowthistle is common in cultivated areas, ditch banks, meadows, and neglected areas.
- No insect biocontrol agents are presently available for perennial sowthistle in Washington.
- Also, the leaf margins of spiny sowthistle are much more spiny or prickly than those of annual sowthistle.