coconut fiber pots

[Andrew]

I haven't used coir pots for orchids but I have for other plants. IME they are good for growing seedlings/cuttings for transplanting into the garden but that's about the extent of their use. They are not suited to growing plants in for any length of time. Long before they actually decompose the repeated expansion and contraction from watering and drying causes them to weaken and crack. For the same reason you also need to take care while handling them or the pot falls apart in your hands. I imagine the average orchids root system would make short work of tearing a coir pot apart. I wouldn't plant anything in them that you want to keep in a pot longer than a few months.