Black Mustard- Brassica nigra
Above: Goldenrod Soldier Beetle on Black Mustard blossom in field near the Westside Community Farmer's Market on University Row in Madison, Wisconsin on August 27, 2022.
Black Mustard - Brassica nigra (Introduced/Naturalized)
Black Mustard can grow from 6" to 60" in height. The flowers have four bright yellow petals that are about 1/3" across. There are four narrow yellow sepals behind the petals. The flowers cluster at the tip of stems.
Black Mustard likes to grow in disturbed sites like fields. Seed pods hold close to the stem below the flower clusters.
Blooms: June - September.
Above: Black Mustard leaves. Image taken on July 17, 2022. Note: Leaves are variable in shape and size.
For more information on Black Mustard visit Wikipedia.
Or, for information on Black Mustard (Brassica nigra) visit the: Wisconsin State Herbarium.
Black Mustard
Brassica nigra
Above: Black Mustard in field near the Westside Community Farmer's Market on University Row in Madison, Wisconsin (8/27/22).
Above: Black Mustard leaf at inflow of Marion Dunn Pond in Madison, Wisconsin (8/21/19).
Above: Black Mustard leaf at inflow of Marion Dunn Pond in Madison, Wisconsin (7/17/22).
Above: Black Mustard seed pods near Thoreau School in Madison, Wisconsin (8/9/22).
Above: Black Mustard botanical illustration circa 1887.
Above: Black Mustard botanical illustration by Jacob Sturm circa 1796.
Above: Black Mustard specimen collected near Pairie du Chien on Highway E in Crawford County, Wisconsin on October 10, 2012.
Above: 1913 Black Mustard (Brassica nigra) line drawing.
