Sisymbrium officinale
Brassicaceae
Hedge Mustard
Stem single, stiff, erect, with branches only near top. Stem has spreading or sharp hairs. Leaves pinnately divided; lower leaves 2–3 pairs of lobes and wide, rounded terminal lobe. Upper leaves reducing in size, becoming linear, sessile, pressed against outer branches. Flowers small, pale yellow. Seedpods erect, sometimes pressed to branches, 1/3–1 in. long, tapering to sharp point. A weed growing in disturbed soils, gardens, roadsides, below 7000 ft.
- Rarity: Locally Common
- Flowering Time: Early Spring, Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer
- Flower Form: Petals 4
- Life Cycle: Annual
- Height: 6–36 inches
- Habitat: Coastal, Disturbed, Meadow
- Found In: Mt. Rainier NP, N Cascades NP, Olympic NP
- Native: No
- Latin Synonyms: Erysimum officinale
