Weed class: monitor list
Native to: Asia and Europe
Why Is It a Noxious Weed?
This plant is on the monitor list. Please contact its sponsor P. Stevenson to report locations or for more information.
How would I identify it?
Creeping fieldcress is a perennial plant that is hairless or sparsely hairy.
Flowers in elongated racemes of yellow flowers. Flowers have four petals, six stamens and are around 1/3 inch in diameter.
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.
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.