Brassica nigra

Black Mustard

Stems erect, slender, with dense stiff hairs, widely branched near top. Basal leaves pinnately lobed, with even, small teeth and rough hairs, green but not shiny; stem leaves similar but smaller, sessile. Flowers clustered in stem tops, with 4 yellow petals to 1/2 in. long. Seedpods on erect stalks, pods 1/3–1/2 in. long, pressed close to stem. Abundant in fields, disturbed places, at low and mid elevations.

  • Rarity: Common
  • Flowering Time: All Spring And Summer
  • Life Cycle: Annual
  • Height: 12--60 inches
  • Habitat: Meadow, Disturbed
  • Found In: Mt. Rainier Np
  • Native: No