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Silverleaf Nightshade (white
horsenettle, silverleaf nettle, bullnettle)
Solanaceae, the nightshade
family
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Background
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 Silverleaf Nightshade is native to the central U.S. The
plant spreads by seeds and rhizomes, and grows under a variety of
environmental conditions. Berries and foliage are poisonous to livestock.
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Description
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Silverleaf Nightshade is a
perennial that grows up to 3
feet tall. Leaves are lance shaped, somewhat wavy along the edges, an inch
or less in width, and up to 5 inches long. Stems are armed with a few
yellowish thorns. Both stems and leaves are covered with downy hairs, giving
the plant a silvery appearance. Flowers are about 1 inch wide with 5 bluish
to lavender or occasionally white petals, surrounding 5 bright yellow
anthers clustered in the center. Flowers bloom from midsummer until frost.
Fruits are smooth, orange-yellow to dark colored, many- seeded berries. The
plant has extensive horizontal rhizomes from the crown.
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Distribution
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 Silverleaf nightshade is found throughout the central U.S.
and occasionally in the West. Idaho infestations are noted in the map at
left. |
Control
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Herbicides ate registered for control of silverleaf
nightshade. No biological control agents are available for Idaho.
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© 1999 University of Idaho:
Text and photographs for these pages from Idaho's Noxious Weeds, by
Robert H. Callihan and Timothy W. Miller (revised by Don W. Morishita
and Larry W. Lass).
Please contact: Ag Publishing, University of Idaho, Moscow,
Idaho 83844-2240; 208 882-7982 visit the Resources for Idaho website at
http://info.ag.uidaho.edu, for more information about this or other
publications.
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