Allamanda is a genus of flowering plants in the family Apocynaceae, known for their vibrant yellow flowers. These tropical plants are native to Central and South America and are often used in gardens and landscapes for their ornamental value. They thrive in warm climates and can grow as shrubs or vines, reaching heights of up to 10 feet. The flowers of Allamanda are trumpet-shaped and can attract pollinators like bees and butterflies. While they are beautiful, it's important to note that all parts of the plant are toxic if ingested, making them unsuitable for areas frequented by pets or small children.