Copper Leaf or Mukunu Wenna plant is a one of the most popular leaf vegetable in Sri Lanka that native to Sri Lanka and many other countries in the world. It is often cultivates in low country wet zone and naturally found on wet soil like edge of paddy field, or marsh lands. It is use as a herbal medicine and often confuse with Alternanthera philoxeroides, commonly called "Alligator weed" which is recently added exotic weed and toxin plant should not use for food.