Green cestrum, scientifically known as Cestrum parqui, is a flowering shrub native to South America. It is characterized by its bright green leaves and small, tubular yellow-green flowers that bloom throughout the year. The plant can grow up to 6 feet tall and is often used in gardens for its ornamental value. This shrub is known for its strong fragrance, especially at night, attracting various pollinators. However, all parts of the plant are toxic if ingested, making it important to handle with care, especially around pets and children.