Horsenettle (Solanum carolinense)


Category B Weed

Nightshade family (Solanaceae)

Helpful Links

List of all Photo Credits

Stem

  • 1-3 ft. tall, branched, covered with spines (less than 0.2 in. long) and short hairs

Leaves

  • Alternate, oval to lance-shaped and 3-6 in. long; spines often on veins on undersides of leaves; edges (margins) are wavy to lobed

  • Leaves covered with tiny yellow hairs; hairs appear star-shaped with magnification

Flower

  • Star-shaped with 5 white to pale violet petals; 0.75-1.5 in. diameter; 5-20 flowers clustered on stalks at tips of branches

  • Berries are round (0.25-0.75 in. diameter), shiny, yellow and resemble tiny tomatoes

Root

  • Deep, creeping root system

Other

  • Grows best in sandy, well-drained soils; often infests crop fields and pastures; known to occur in Elko County

  • Perennial; reproduces by seed and creeping roots

  • Also known as Carolina horsenettle; native to North America; toxic to livestock and humans; hosts a number of diseases and insects that attack related plants, such as tomato and potato

Control

  • Tillage, mowing and grazing are NOT effective

  • Repeated hand-digging of individual plants can be effective for small infestations

  • Apply glyphosate or 2,4-D to young, actively growing plants; picloram at full flower; imazapyrto actively growing plants

Images

Horsenettle Plant
Mature Plant
Horsenettle Flowers
Flowers
Horsenettle Fruit
Fruit
Horsenettle Leaves on stem
Leaves on stem
Horsenettle Seedling
Seedling
Nevada Noxious Weed Field Guide
Nevada Noxious Weed Guide