Cestrum, also known as the jessamine or nightshade, is a genus of flowering plants in the Solanaceae family. It consists of approximately 175 species of evergreen shrubs and small trees that are native to various regions in the Americas, including the southwestern United States, Mexico, and parts of Central and South America. The name "cestrum" is derived from the Latin word "caestrum," meaning "impenetrable fortress," possibly referring to the dense foliage that characterizes these plants.
Cestrum species are recognized for their showy, tubular flowers that are typically greenish or white, although some species produce yellowish or reddish blooms. The flowers often have a pleasantly sweet fragrance, which is particularly pronounced during the evening, attracting night-flying insects for pollination. The plants generally have simple, elongated leaves that may be smooth-edged or serrated, depending on the species.
Some species of cestrum possess medicinal properties and have been used in traditional medicines. However, caution is advised as certain parts of the plant, particularly the berries, are toxic if ingested. The alkaloids present in cestrum can cause symptoms such as nausea, vomiting, stomach pain, and in severe cases, even death.
In horticulture, cestrum species are grown as ornamental plants in gardens and landscapes, admired for their attractive foliage, colorful flowers, and sweet scent. They are relatively low-maintenance and can thrive in various soil and light conditions, although they generally prefer full sun or partial shade. Cestrum can also be propagated through seeds or stem cuttings. Overall, these plants add beauty and fragrance to outdoor spaces, attracting both nature enthusiasts and gardeners alike.
