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Pesticide Safety Education Program

Ohio State University Extension


Perennial sowthistle (Sanchus arvensis)

Description: Perennial sowthistle resembles annual sowthistle with prickly-toothed leaves and erect stems.

Life Cycle: Rhizomatous perennial

Habitat: Roadsides, waste areas. Prefers slightly alkaline to neutral, fine textured, rich soils.

Flower: Bright yellow to yellow orange clustered flowers resembling dandelion.

Fruit: Long, oval, ribbed achenes with feathery pappus.

Leaves: Alternate, prickly-toothed margins. Deeply triangular-lobed.

Root: Rhizomes

The problem is…perennial sowthistle causes reduced crop yields and increases costs of cultivation.