I actually "seeded" my oaks with Spanish moss several years ago, moss collected along the coast of Mississippi. I wanted to prove my fellow Master Gardeners wrong.
I was told it would be impossible to grow the stuff up here. It will be interesting to see if it all survives our horrible, horrible cold that we are experiencing. Gosh we are not even into our "cold" months and we have already had 12 nights in the mid to lower 20's and a couple more are predicted this coming week!
Because I grow so many tropical plants, and afterall, the Spanish moss IS a tillandsia, when I water and fertilize my plants that are outside (hundreds of them) in the spring-fall, the Spanish moss gets the same treatment. Don't laugh. I know no one has probably ever heard of someone actually watering and fertilizing their Spanish moss.