Weed Control

SDSU Cooperative Extension Service

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plant

Life cycle: Local noxious. Biennial.

Leaves: Deeply divided, crinkly, hairy. Lobes tipped with long, yellowish spines. White midrib.

Stems: 3 to 5 feet, branched; spiny wing-like growth.

Flowers: ½ to ¾ inch, reddish-purple. Produced in clusters.

Roots: Heavy, branched taproot. Forms rosette first season.

Weed Species: local noxious weed

Comments: Aggressive weed. Control before bloom. Treat at rosette stage in fall or spring.