Creeping Fieldcress

Rorippa sylvestris

Creeping Fieldcress

Family: Brassicaceae

Weed class: monitor list
Native to: Asia and Europe

Why Is It a Noxious Weed?

This plant is on the monitor list - it is not a listed noxious weed in Washington. Please contact its sponsor P. Stevenson to report locations or for more information.

How would I identify it?

General Description

Creeping fieldcress is a perennial plant that is hairless or sparsely hairy.

Flower Description

Flowers in elongated racemes of yellow flowers. Flowers have four petals, six stamens and are around 1/3 inch in diameter.

Leaf description

Basal leaves similar to stem leaves. Stem leaves with petioles, deeply lobed (3-6 lobes on each side), the terminal lobe is often broader than the other lobes. Leaf base typically not auriculate (with lobes). Leaf margins typically with toothing.

Stem description

Stems prostrate, laying out on the ground, or growing somewhat upright, or fully upright if held up by other vegetation, up to 3 feet in length.

Fruit Seed Description

Each silique (seed pod) is straight, ending in a short beak. Seeds, if produced, reddish brown, and ovoid.

Where does it grow?

Plants grow in ditches, damp areas, pond and lake edges, sandy beaches, disturbed areas, wet roadsides, meadows, fields, and gardens. Herbarium records document Rorippa sylvestris in parts of Washington, Oregon, Idaho, Montana and Canada.

How Do I Control It?

Please refer to the PNW Weed Management Handbook, or contact your county noxious weed coordinator.

Additional Photos