- any composite plant belonging to the genus Sonchus, especially S. oleraceus, a weed having thistlelike leaves, yellow flowers, and a milky juice.
Origin of sow thistle
Examples from the Web for sow thistle
Historical Examples of sow thistle
The Sow-thistle is considered by astrologers to be under the dominion of Venus.Plant Lore, Legends, and Lyrics
In its channel I saw some of the milk or sow-thistle plant growing—the Sonchus oleraceus.
Two species of Sow-thistle (genus Sonchus) are included among our wayside Composites.Field and Woodland Plants
William S. Furneaux
- any of various plants of the Old World genus Sonchus, esp S. oleraceus, having milky juice, prickly leaves, and heads of yellow flowers: family Asteraceae (composites)Also called: milk thistle, (NZ) puha, (NZ) rauriki