Hello,
I appreciate the thoughtful comments on the fig greenhouse in Thailand. The way that they are pruned is certainly interesting. From what I can tell, the sides of the greenhouse are some sort of netting, although the roof is likely plastic or something to keep rain out - I noticed what appears to be small watering hoses. The netting obviously keeps out insects, birds and other critters. No need for winter protection from what I can tell.
I also noticed the large concrete "in ground pots." I was curious about this but noticed in some of his pictures that there were some unused concrete culverts in his yard and I assume that they did not have a bottom enclosure. So, they may be bottomless concrete containers.
Thanks for the comments on this interesting place.
Ingevald