When I was in grad school in Atlanta - oh, SO many years ago - I bought a division of a Platycerium bifurcatum. I put it in a wooden basket of sphagnum. When the roots grew through the moss and were exposed to the air, sterile fronds grow, and then the fertile fronds soon follow.
I moved that plant from Atlanta to Louisville KY, LaGrange KY, Georgetown SC, Jackson NJ and finally to Doylestown PA.
By the time it was lost to the same heater failure that wiped out a 20-year orchid collection in 1994, it weighed about 75 pounds dry, and was over 10 feet in diameter, suspended from chains attached to an 8-foot-tall 2"x4" tripod.
Once caveat about keeping them in the greenhouse: the spores are extremely viable; plucking seedlings from hundreds of orchid pots is a PITA.
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