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How to Manage Pests

Identification: Weed Photo Gallery

Black nightshade

Scientific name: Solanum nigrum (Nightshade Family: Solanaceae)

Life stages of Black nightshade top picture bottom left picture bottom right picture

Click on image to enlarge

DESCRIPTION:
Most of the common nightshades are annuals. The worst of the nightshades are black nightshade (S. nigrum) and hairy nightshade (S. sarrachoides). Black nightshade plants vary greatly in form and color. Cotyledons (seed leaves) of black nightshade are elongate-oval and pointed; the first true leaves are spade-shaped with smooth edges. Lower surfaces are often purple. Berries turn from green to black when mature and the green outer whorl covers only a small part of the fruit surface. Stalks, stems, and leaves have some hairs but are not densely hairy or sticky. Another species, silverleaf nightshades have showy flowers and yellow to orange berries.

Broadleaf ID illustration.


Statewide IPM Program, Agriculture and Natural Resources, University of California
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For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/WEEDS/black_nightshade.html revised: November 17, 2008. Contact webmaster.