Swaziland's Alien Plants Database

Sonchus asper (L.) Hill subsp. asper 
(Sonchus asper)
(Sonchus gigas)
ASTERACEAE
rough sowthistle, prickly sowthistle, spiny sowthistle
Unknown, Minor problem species
Origin:
Growth Form: Herb
Plant Description: Erect, annual herb up to 0.8 m high with well developed fibrous taproots. Leaves alternate, margins spiny.
Key Features:
Control:
Comments:
More information:
NRCS Plants Database

Illustration



USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada.

Photo - flowers/leaves



William S. Justice @ USDA-NRCS PLANTS Database

Photo - flowers



Clarence A. Rechenthin @ USDA-NRCS PLANTS Database

Photo - flowers/leaves



Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln, NE.

Photo - plant



K Braun, Swaziland's Alien Plants Database

Photo - flowers/leaves



K Braun, Swaziland's Alien Plants Database

Photo - plant



The Weeds Society of Western Australia

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