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Weed Identification

horsenettle

Family

Solanaceae

Scientific Name

Solanum carolinense

Other Common Names:

bullnettle

Habit

A prickly plant with prickles on the stems and leaves, stems are upright and branching with a dense rhizomatous root system spreading as far as 1m. May reproduce by seed or rhizomes.

Leaves

Sandpaper like texture with prickles along stalks and veins usually having 2-3 lobes and hairs on both sides. 2.75 to 4.75 inches (7 to 12 cm) long and 1 to 3 inches (3 to 8 cm) wide.

Identifying Characteristics

White star shaped flowers similar to that of potato, prickles covering stems and leaves, with berry like fruit containing several small seeds.

Flower Seed Head

Appear in June, similar to potato, with white or purple petals and yellow center. They are found on the terminal end of a spiky branch.

Seed Fruit

Smooth round berries, like small tomatoes, that are green and then turn yellow when mature and contain 40-170 round, flat, orangish seeds.

Where Found

Spreading northward from the Southeastern United States to Canada and Texas, horsenettle likes dry sandy soils and is found in orchards, nursery crops, pastures, flower beds, open woodlands, and is sometimes found in conventional tillage situations.

Growth Habit

upright and nonwoody

Thorns or Spines

present

Approximate Flower Diameter

pencil

Dominant Flower Color

Varies: 
white
purple

Flower Symmetry

radial symmetery

Leaf Hairs

has hairs

Leaf Shape

Varies: 
lance
oval

Leaf Arrangement

alternate

Leaf Margin

lobed

Leaf Structure

simple

Leaf Stalk

shorter than leaf

Stem Hairs

has hairs

Stem Cross Section

round or oval

Milky Sap

not present

Root Structure

Varies: 
fibrous
taproot

Life Cycle

perennial

Plant Type

Herb