Alternanthera dentata (Joseph’s Coat / Purple Alternanthera)

Alternanthera dentata, commonly known as Joseph’s Coat, is a vibrant evergreen perennial grown for its striking foliage in shades of deep purple to burgundy. Its dense, bushy growth habit makes it an excellent choice for adding bold colour contrast in garden beds, borders, and container displays.

While its small white flowers are considered insignificant, the plant’s ornamental value lies entirely in its richly coloured leaves, which maintain strong visual impact throughout the warm growing season. Often grown as an annual in cooler climates, it is low-maintenance and highly effective for mass planting and decorative arrangements.