Senna sulfurea, commonly known as Sulphur Senna, is a perennial shrub native to the Indian subcontinent. It can grow up to 2-3 meters tall and equally wide, with a rounded form. Sulphur Senna is recognized for its bright yellow, butterfly-attracting flowers that bloom throughout the year, particularly in warmer climates. The plant’s foliage is also noteworthy, with pinnate leaves that are green to gray-green in color.

Sulphur Senna is valued for its drought tolerance and continuous flowering, making it a popular choice for tropical and subtropical landscapes. It is often used for hedging, ornamental displays, and as a specimen plant. In cultivation, it thrives in full sun and requires well-drained soils. While it is adaptable to a range of soil types, it performs best in soils that are moderately fertile. Regular pruning can help maintain its shape and promote denser foliage. Sulphur Senna is generally pest-resistant but can be susceptible to root rot if overwatered or planted in poorly drained soils. It is not known to be invasive outside its native range but should be monitored to ensure it does not become a problem.CC BY-SA 4.0