Pink, Rose, Red, or Purple Flowered Forbs

Pink, Rose, Red & Purple Flowered Forbs
Black henbane
Blue Mustard
Bull thistle
Canada thistle
Common burdock
Diffuse knapweed
Iberian knapweed
Meadow knapweed
Musk thistle
Purple loosestrife
Purple starthistle
Red clover
Redstem filaree
Russian knapweed
Scotch thistle
Spiny plumeless thistle
Spotted knapweed
Squarrose knapweed
Tall morning-glory


Blue Mustard
Chorispora tenella (Pall.) DC. (Mustard family, Brassicaceae)


Prostrate or erect, single or branched stemmed, clump- or patch- forming winter annual forb; 2 to 20 inches tall; shallow to stout taproot; seedlings have oval and somewhat glandular leaves.

Leaves: Rosette leaves oblong to oblanceolate, typically sparsely covered with minute glandular hairs; foliage sparsely to moderately covered with simple, minute glandular hairs that are sticky to touch; stems leafy, branched mostly from the base; leaves green, alternate, elliptic or oblong to lanceolate or oblanceolate; lower stem leaves petioled, 1-1/8 to 1-3/8 inches long, with wavy toothed to pinnately lobed margins; upper stem leaves are sessile, with entire to wavy- toothed margins.

Flowers: Flowers March to May; flowers showy in elongated clusters, 4-petalled, pale purple to bluish-purple, narrowly clawed, 3/8 to 1/2 inch long; sepals 4, usually purple with narrow membranous margins, separate but forming a tube, 1/4 to 5/16 inch long.

Fruit: Fruit is a silique, long upturned, cylindrical capsule with an elongated beak about 1-1/8 to 1-3/4 inches long and 1/16 to 3/32 inch wide; containing round, reddish-brown spherical seeds 1/16 inch in diameter; usually remain within the pod segment.


Blue mustard occurs in dry, disturbed sites such as waste places, pastures, and along roadsides and railroad rights-of-way within elevations that generally range below 7,500 feet.


Seedlings exist as basal rosettes until flowering stems are produced in early spring. Reproduces by seed; viable seeds can be produced 10 days after bloom.


Native to Eurasia; the plant has a strong scent which is generally considered unpleasant. This species generally occurs as a weed in wildland areas of the Southwestern Region rather than as an invasive plant.

Collage of 4 images of Blue mustard



Forest Service Shield
Invasive plants and weeds of the national forests and grasslands in the southwestern region
blue mustard fruit blue mustard plants blue mustard flowers