Black Nightshade
Scientific Name: Solanum nigrum
Plant Family: Solanaceae
Native Region: Native to Eurasia; introduced and naturalized worldwide including the Americas, Australia, and parts of Africa.
Brief Description
A common annual or short-lived perennial herb with ovate leaves, small white star-shaped flowers with yellow centers, and small round berries that turn from green to black when ripe.
Care Instructions
It is often considered a weed and requires very little care. It thrives in disturbed soils with full sun to partial shade and moderate moisture.
Medicinal Value
We do not currently provide medicinal value for plant identifications.
Sunlight
Full sun to partial shade; 4-8 hours per day.
Watering
Moderate watering; prefers consistently moist but well-drained soil. It is moderately drought-tolerant once established.
Soil
Adaptable to various soil types, but prefers fertile, nitrogen-rich loamy soils with a pH of 5.5 to 7.5.
Hardiness Zone
USDA zones 4-11 (grown as an annual in colder zones).
Growth Habit
Annual or short-lived perennial; herbaceous upright or sprawling growth, typically reaching 30-100 cm in height.
Bloom Season
Summer to early Autumn; produces small white flowers with five petals and a protruding yellow stamen column.
Toxicity
Highly toxic to humans and pets if ingested, particularly the green berries and leaves, which contain solanine and other glycoalkaloids. Symptoms include nausea, vomiting, and cardiac distress.
Propagation
Propagates easily by seed. Seeds are often dispersed by birds who eat the ripe berries.
Common Pests & Issues
Susceptible to typical Solanaceae pests like aphids, flea beetles, and tomato hornworms. Can host viruses like potato leafroll virus.
Similar Species
Often confused with Atropa belladonna (Deadly Nightshade), which has larger, bell-shaped purple flowers and much more lethal toxicity, or Solanum ptycanthum (Eastern Black Nightshade).
Interesting Facts
In some parts of Greece and India, specific varieties are consumed as boiled greens (Horta), but this requires very specific identification and preparation to avoid poisoning.
Created At: 2026-05-05T20:21:58.158701