I agree with some of the comments! It's more important to understand the waterings than the media they're growing in. I found this article online and I think it's very illustrative about the combination of pots, media, weather... and waterings. "How should I water my orchids?"
Such great growing tips from all. But if anyone grows on mounts,would you still change sphag yearly? I rarely fertilize plants in this medium since it does seem to break down quicker, but I'm noticing moss getting darker and I'm not even sure if it smells as fresh as it once did.
Thanks James and Cari. Most of the mounts are attached with that fishing line. If the orchid seems established enuf on its mount,I can cut it off as well as remove as much of the old moss as possible?