Korean Natural Farming sounds a lot like Permaculture. As I remember the Trobriand Islanders were big on yams. Their mythology featured the night life of the yam plants--the plants would rove around at night having all manner of adventures. Did the Hawaiians
do a lot of adventuring with their boats,i.e. visiting other islands, or just use them for fishing?
When I lived in Santa Barbara (on the California coast) there was a banana tree in our yard. It had a beautiful blossom, and did have one rack of bananas. The tree was about 50 ft tall--but there was only one of them. Do they normally grow in groups?
Where am I based now? Rural Alabama--zone 8. Not tropical--No citrus trees, no palm trees, but we do have camellias and azaleas.