Black Mustard (Brassica nigra)

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Black Mustard

Black Mustard is a common plant of sand dunes and sea cliffs, seen in flower from May until September. Its 4-petalled flowers are usually pale yellow in colour but can be white. The plant is typically 3 to 5 feet in height. Differing from similar species in having stalked leaves; the upper leaves are lanceolate, the lower bristly.