I had a large stand of nun's orchid in one of my garden beds. It was growing there for several years and was quite large. Then Katrina came and wiped it pout - along with everything else in the garden. So I started a new group a few years ago & they were doing quite well. Then I got chickens who developed a love of nun's orchid leaves! And before I knew it, those were gone also. I've got to find a new locations - away from chickies - to plant a new grouping this spring.
They do quite well in the ground in New Orleans. I've learned that they cannot take the hot mid-day sun, so I try to give them only morning or afternoon direct sunlight.
here in Australia they are called "the swamp orchid" as they grow naturaly in swampy areas from Northern New South Wales to up through Queensland, where it ranges from sub tropical to tropical, I have seen them growing in the wild not far from where I live, a truely spectacular sight, I grow mine in pots sitting in a tray of water, the same as my carnivorous plants