Yeah, I always come at this from a different angle.
I think that there are three causes of crown rot.
1. An injury that allows entry to a fungus.
2. Overheating.
3. Chilling so as to drop to a suboptimal temp so badly that tissue damage, necrosis and fungal infection kill the plant.
You will notice that at no point did I mention wetting.
I spent two years deliberately filling the crowns of all my phals with water at every watering. The water drains away in seconds (try it if you don't believe me) and the crown dries by the time you can walk to the kitchen to get a paper towel to dry it.
HOWEVER. I water with room temp water, and I water in the morning, never in the evening. I do accept that soaking an already chilled phal late in the evening, or a hot one with stone cold water could induce the same sort of tissue damage that might well lead to crown rot.
Getting other orchid crowns wet though is a BAD IDEA.
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