Selected images for perennial sowthistle (Sonchus arvensis )
Perennial sowthistle is a perennial herb native to Eurasia. Stems can reach 4.9 ft. (1.5 m) in height and contain milky sap. Leaves are sessile, alternate, clasping, up to 12 in. (30 cm) long and decrease in size further up the stem, margins undulate with sharp spines. Flowering occurs in June to October, when yellow, tight, dandelion-like flower heads develop at the tips of the branches. Flowers open 2-3 hours after sunrise and close about noon. Fruits are reddish, ribbed and have a tuft of hair (pappus) at the top. Perennial sowthistle occurs along roadsides, railroads and other disturbed habitat.
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1459594 perennial sowthistle Sonchus arvensis Plant(s) Steve Dewey |
1383063 perennial sowthistle Sonchus arvensis Flower(s) Tom Heutte |
2187017 perennial sowthistle Sonchus arvensis Fruit(s) David Cappaert |
1559273 perennial sowthistle Sonchus arvensis Foliage Ohio State Weed Lab Archive |
1551164 perennial sowthistle Sonchus arvensis Feature(s) Ohio State Weed Lab Archive |
1196230 perennial sowthistle Sonchus arvensis Stem(s) Michael Shephard |
1459589 perennial sowthistle Sonchus arvensis Plant(s) Steve Dewey |
1459590 perennial sowthistle Sonchus arvensis Foliage Steve Dewey |
5376827 perennial sowthistle Sonchus arvensis Fruit(s) Julia Scher |
1459591 perennial sowthistle Sonchus arvensis Fruit(s) Steve Dewey |
