Paederia is very easy to grow and spread like wild fire especially when it gets a lot of watering and chicken pooh. Vietnamese people use it as raw fish wrap dipped with sauce, salad, egg omelet, or blood sausage stuffing. Any leaves can be eaten- young and old. The leaves will stain your tongue black for many many day. Health benefit is unknown, but Paederia is a natural stool softoner- good for constipation. Paederia is an acquired taste kinda like durian.
Don't buy it from Ebay. It's expensive. Just ask them Asians here. I am sure they will hook you up with one or two plants.
Can anyone share info on paederia lanuginose (la mo long)?