Danita, I can only tell you what I do with my Spathoglottis plants here in NE Mississippi (8b). They are hardy in zones 9'ish - 11, but not here. I bring all my plants inside in mid-October to early November and they overwinter in a greenhouse. They remain outside, under oaks and cedar trees from early April till fall. I just don't know whether they would go dormant during the fall and winter months if water and light were withheld. I have a feeling they won't. All I have that do go dormant during those 4-5 months are plumeria, but those have to be brought inside as well, since freezing temperatures would kill them, dormant or not.
