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Perennial sowthistle (Sanchus arvensis)

Perennial sowthistle (Sanchus arvensis)

Description: Perennial sowthistle is a herbaceous perennial that resembles annual sowthistle, with prickly-toothed leaves and erect stems up to 5' in height.

Life Cycle: Rhizomatous perennial

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

Leaves: Alternate, blue-green with prickly-toothed margins. Deeply triangular-lobed, 4"-12" in length.

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

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

Root: Deep taproot with rhizomes.

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

sowthistle in spring

budding flowers

flowers

sowthistle seeds

Sowthistle in winter