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Bittersweet nightshade
Nightshade Family
Solanum dulcamara L.
Key identifying traits
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A vine that trails or climbs, with spreading stems
up to 10’ long
1”-4” long leaves are dark green to deep purple
and are often lobed at the base
Star-shaped flowers have (5) purple petals and
very prominent yellow-orange anthers (like the
typical potato plant flower)
The fruit is a berry that starts out hard, green
and oval, ripening to yellow, orange then red and
somewhat translucent
Biology and ecology
 A perennial reproducing mainly from seeds
 Native to Europe but now widespread throughout
much of North America
 ALL parts of the plant are toxic to humans and
animals. The bright red berries can be an
attractant, especially to children
 Plants can often be seen winding up through brush
along drainage ditches and waterways; also found
around old buildings, fence rows and waste areas
 Prefers moist habitats
Control
Photo above and below: GD Carr, University
of Hawaii at Manoa
Prevention – Learn to identify plants; know your
property
Biological – No known biological control
Cultural – Healthy vegetation will help discourage
invasion, but the plants are shade tolerant
Mechanical – Pulling or digging small infestations is
practical. Roots must be removed as well as stems to
avoid re-sprouting. Consistent, persistent mowing
prior to berry formation may be effective
Chemical –Brush killers or glyphosate products should
be effective, especially at the flower stage or in fall
Where found – Bittersweet nightshade can be found scattered here and there throughout
Stevens County, especially along creeks, around old farm equipment and in ditches.
Stevens County Noxious Weed Control Board, December 2004