I posted this on Orchidboard as well, I figure I might get some good replies here. Fraser's Thimble Farms - Cypripedium, lady slipper, Hardy Orchids, Pleione, Bletilla This Canadian nursery sells Pleione Limprichitii, and claims that it is hardy to -20C. However, every other site on the culture of this orchid says that it cannot handle hard freezes. Does anyone else have experience growing this plant outdoors in cold climates? I can do a dry -20C min, but here in zone 5b it will definitely freeze.