Ipomoea aquatica (Kangkung): Ipomoea aquatica is a semiaquatic, tropical plant grown as a leaf vegetable. It is found throughout the tropical and subtropical regions of the world, although it is not known where it originated. This plant is known in English as Water spinach, River spinach, Water morning glory, Water convolvulus, or by the more ambiguous names "Chinese spinach", "Swamp cabbage" and "Kangkong" in Southeast Asia. Refer to wikipedia and learn how to grow kangkung. by now we have enough kangkung to export instead of makig noise and laughing in the internet. Wake up!!!!

http://en.wikipedia.org/wiki/Ipomoea_aquatic
Good to control diabetic too: Studies conducted with pregnant diabetes-induced rats have shown a blood sugar lowering effect of Ipomoea aquatica by inhibiting the intestinal absorption of glucose.