Greenspot nightshade originates from the Western part of North America and has broadened its reach to the Southwestern Pacific region. It is primarily found in temperate zones, thriving in its native range, while it has been introduced to other areas, adapting to similar climates beyond its original habitat.

All parts of greenspot nightshade are toxic, especially unripe green berries. Symptoms of poisoning include headache, nausea, diarrhea, and more severe effects like cardiac arrhythmia and respiratory failure. Ripe berries, though typically harmless, may be consumed by children due to their color. The plant contains solanine, posing a risk of accidental ingestion due to its similarity to edible fruits.

Found from central California to Mexico, greenspot nightshade is an agricultural weed containing poisonous alkaloids. Though not invasive, it poses a problem for farmers in its native range, as it frequently grows in pastures, orchards, and crop fields. It is toxic to grazing animals and hosts a range of pests that threaten many types of produce. Greenspot nightshade can also grow up to 1.8 m tall, allowing it to obscure more desirable garden species. However, greenspot nightshade is easily outcompeted by other plants, so it is advised to grow favorable species near the problem area to reduce their growth. Herbicides are also an effective control method.

Best weeding time: before fruition