Other names: Garden yellow rocket, winter cress
Life cycle: Winter annual or biennial
Found in: Winter small grains, pastures and turfgrass throughout the U.S., but mainly in the eastern and central portions.
General description: Erect plant with shiny green leaves and yellow flowers that can grow up to 3 feet high.
Seedlings: Cotyledons are egg-shaped with notched tips and occur on long stalks.
True leaves: Alternate, dark green and shiny with wavy or toothed margins. Leaves at the base are large, up to 8" long, and lobed, becoming smaller and less lobed up the stem.
Flowers and fruit: Flowers are bright yellow and bloom in clusters at the ends of branches. Fruit is a squarish pod with a beak on the tip.