IPMP3.0, Oregon State University, Copyright 2000

Biology and Management of Black Nightshade


Registered Herbicides

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  Black Nightshade

General Description:

Black nightshade is an annual. Erect glabrous or hairy stems 1/2 to 2 feet tall. Leves are smooth to wavy edged. Young leaves are often deep purple underneath. Stem is erect or spreading, becoming widely branched, 1 to 2 feet tall.   Flowers sre white or pale-blue, 5-lobed, about 1/4 inch across, in small clusters, flowers resemble those of potato or tomato. Berries are green turning black at maturity, smooth, about 3/8 inch in diameter, containing numerous seeds. Seeds are flattened, about 1/16 inch in diameter, dull, pitted, yellow ot dark brown.

Herbicide Control Notes:

Black nightshade usually emerges too late for effective control with Gramoxone.