Senna occidentalis, commonly known as Coffee Senna, is an annual or short-lived perennial herb native to tropical regions of the Americas, including the southern United States, Mexico, and South America. It typically grows to a height of 3-7 feet. Coffee Senna thrives in disturbed areas such as roadsides, agricultural land, and waste spaces. It has compound pinnate leaves and small, showy yellow flowers with five petals and six fertile stamens that bloom in the summer and fall. The plant produces long, slender seed pods.

Coffee Senna is valued for its ornamental flowers and its use in traditional medicine, although it should be used with caution due to its toxic properties. It is not commonly cultivated in gardens but may be used in naturalized areas where its potential invasiveness is not a concern. This plant prefers full sun to partial shade, tolerates a range of soil types, and requires minimal water once established. It is not particularly demanding regarding soil fertility or pH. However, it can become weedy and is considered invasive in some regions outside its native range.CC BY-SA 4.0