Solanum sisymbriifolium, commonly known as sticky nightshade or litchi tomato, is a spiny, perennial herb native to the warm temperate to subtropical regions of South America. It typically grows up to 5 feet tall and has a bushy growth habit. This plant is characterized by its thorny stems and foliage, and it produces star-shaped white to pale blue flowers followed by small, round, edible red fruits that resemble cherries and have a tart flavor. The fruiting season extends through the summer months, and the fruits are quite showy, attracting both visual interest and wildlife. In its native habitat, it is often found in disturbed areas, field edges, and open spaces.

Sticky nightshade is valued for its ability to act as a trap crop, particularly in potato fields, where it lures nematodes away from the main crop. It is also grown for its edible fruits and as an ornamental plant due to its attractive flowers and fruits. The plant prefers full sun and well-drained soils, and it is relatively drought-tolerant once established. While it can be a useful plant in cultivation, Solanum sisymbriifolium is known to be potentially invasive in some regions outside its native range, so it is important to check local regulations before planting. It can also have aggressive roots and spiny stems that may cause issues if not managed properly.CC BY-SA 4.0