An aquatic plant. Southern provinces of China are cultivated or wild. Its pulp is edible, young stems can be used as vegetables, fruit with horns, commonly known as rhombus. Growing in the lake, rhombus vine long green leaves, stems for purple-red, bright yellow flowers. Rhododendron is an annual herbaceous aquatic plant, also known as "aquatic groundnut", fruit "rhododendron" for nuts, pendant in the water under the dense foliage, the whole plant must be taken up upside down, can be seen, usually in the spring in February, we must set up a nursery, intensive cultivation of seedlings, to the end of May to the beginning of June in the early summer, after the first phase of the rice harvest, will be the whole paddy rice field to build the ground, building ridges, diversion of water into the field, transplantation of rhododendron seedling. Rhododendron has green, red and purple color, with crispy skin and beautiful flesh, which is considered a good fruit and can also be used as food. Generally steamed and eaten, or dried and chopped into fine grains, porridge can also be eaten.