, otherwise known as Tobacco, is a large annual plant that is a native of tropical and subtropical America but it is now commercially cultivated worldwide. N. tabacum
has large green leaves and produces long trumpet-shaped white-pink colored flowers.
All parts of the plant, except the seeds, contains varying concentrations of nicotine. The amount of nicotine present depends on factors such as the soil, environment, season, stage of growth of the plant, and weather conditions. As the plant ages, the toxicity increases.