Hey everyone, I am going to add my 2 cents, but as far as sphagnum and any other mosses go, I do not use any of them unless they grew accidentally and are still growing in or on mounts or some pots. I do not use sphagnum as it promotes root rot way too easily and other moss needs too much moisture as even with 80+% humidity my moss dries out unless i water a few times a day. I use prime agra and it works well as the orchids are huge and full and look good. I used to grow in pure sphagnum moss but it nearly killed some of my temperate orchids- unless you live in a place with lots of humidity and no direct sun in summer, chances are moss is not the best thing to use. I only use it for my phals along with prime agra in about 1 to 1 ratio or it gets waterlogged and kills roots easily. The other "mosses" mention are bromeliads and do not do well after being removed from trees. Also, be careful as there are parasites that can be transferred to orchids from bromeliads and trees if you do not clean and spray with insecticides and alcohol before trying to bring them into the orchid environment.
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