One thing I have learned is if you remove an orchid from it's medium, the roots often must adjust so you have "shock" of some kind. People who change out the medium are just putting new medium that has not broken down due to water "decaying" or turning the medium to "compost" which also leads to a lot of nitrogen. Orchids that grow on trees are on a living plant, and so there is no "composting" going on.
Taking an orchid and putting it in a different medium, for instance, going from bark chips to rocks, and
misting, are totally changing the situation around the roots, and in some cases, if you go to semi or full hydroponic, the roots that grow out will be adapted to that situation alone. So constantly moving from one type of medium to another type can shock the plant causing set back. So if you are going to move the plants, you should move to and from "similar" medium situations.
Orchids like good airflow. Many actually live in areas where there are dry and rainy seasons. I've found several types of dendrobiums like constant moisture at the roots (Latouria, and cannaliculata crosses) but do not like it on their leaves. Although there is a mental image of "misty" jungle and so on, that is only usually at certain times of the day, often morning when hot and cool air mix. Keeping an orchid in that situation full time would be asking for crown rot.
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Hybrid Mode
