Austrian fieldcress (Rorippa austriaca)

Category A Weed

Mustard family (Brassicaceae)

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  •  Up to 3 ft. tall and branched at the top


    • Bluish-green, 1-4 in. long and oblong to lance-shaped; edges (margins) are smooth to toothed

    • Stem leaves are alternate; leaf size decreases up the stem; bases of upper leaves have small lobes that clasp the stem


      • Small yellow flowers (0.1 in. wide) with 4 petals; clustered at tips of branches

      • Seed pod is oval, 0.1 in. long and borne on a 0.3-0.6 in. long stalk


        • Thick, fleshy taproot with creeping roots


          • Grows best in moist, disturbed areas; often infests roadsides, waste areas, pastures and crop fields; not known to occur in Nevada

          • Perennial; reproduces by roots; forms dense patches


            • Hand removal of individual plants (including roots) can limit spread of small infestations

            • Repeated cultivation and improved drainage of wet areas have also been reported to be effective

            • Apply 2,4-D to actively growing plants


              Austrian Fieldcress Plant 215x150
              Mature Plant
              Austrian Fieldcress Plant Flowering 215x150
              Flowering Plant
              Austrian Fieldcress Flower 215x150
              Austrian Fieldcress Rosette 215x150
                Nevada Noxious Weed Field Guide
              Nevada Noxious Weed Guide