The order of Solanales contains around 4,000 species and includes the families of nightshades and morning glories with various crops but also many weeds. Taxonomically, the order is related to the Gentianales with which they share features like a similar flower morphology and the presence of bicollateral vascular bundles. The characteristics of the Solanales include, among others, the presence of alternate leaves, united petals and 5 stamens. Most are herbaceous plants.
The group includes the following weed families: