Hey! How are my peeps here doin'?
Bec, when I started growing these I was told by the grower that he did try out tree fern fiber but they did not grow as well compared to the moss mounds. He said it was too dry for them.
I think it all depends on your watering habits. If you can always maintain high humidity and tend to your babies every day, then I would think neos could grow pretty well in the tree fern. I you're like me and only check on your plants every 2 - 3 weeks now AND they are hanging out in the basement where the RH is around 30 - 40 % in the winter, they may not like the tree fern fiber so much.
BTW, I haven't been doing the once or twice a week spraying in the winter anymore because I haven't had time. This winter I've just been dunking them in water and soaking every 2 - 3 weeks. I'm hoping for the best next spring.