Kangkong, Water Spinach or Ipomoea aquatica and in Thai its Paak Buong can be found in abundance in the S.E Asia region. They are use as vegetable and many dishes use this plant.
I prefer raw, since I plant this then its safe for me to consume it raw. Otherwise if its from the market I would refrain myself from that indulgence.
I grow these from cuttings, normally they are sold at the supermarkets with their roots intact. Cut that portion and use it as growth material. I would get about 70% success rate.
Sometimes when I go to the wet market, this is where old ladies or Chinese Nyonya sell vegetables.
These nice Nyonyas will be more than happy to give me the root cuttings. Probably one less garbage for them to worry about.
There are few variety of Kangkong here, two of which are commonly use as vegetable. The cultivated Kangkong as shown here and the wild Kangkong, where the stem is more darker in color.
In the old days, this plant is consider as worthless, because they can be found almost every where.
Kangkong can be use as feed for the Tilapia instead of Duckweed.
Its best to feed them in the morning where no other foods are given, then they'll eat otherwise they will go for the pellets or other food first.
Its interesting to watch when these Tilapias feeding on the Kangkong.