blue mustard (20983 bytes)

Blue Mustard: Chorispora tenella

Blue mustard is a winter annual that germinates in the fall and produces a rosette with deeply lobed leaves, similar in appearance to a dandelion.

Blue mustard bears purple or blue flowers at the top of the plant in March through April. Leaves on the flowering stems are coarsely toothed and have wavy margins. The plant may grow from 1 to 1 1/2 feet in height. Two-inch long, bean-like seedpods (siliques) that resemble "beaks" mature in early summer.

blue mustard blossoms (3591 bytes) Blue Mustard Blossoms


terminal leaves (11497 bytes) Seed pods


foliage (2904 bytes) Foliage


Herbicides are most effective if applied before weeds start to bolt in the spring.   In the spring, while it is actively growing, this weed can be controlled with an application of 2,4-D.


Photographs: Judy Sedbrook.

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Date last revised: 01/05/2010