For how long can/should I soak my orchids? Brassias, phalaenopsis, oncidium,etc

[camille1585]

Overnight soaking is not not going to kill plants. I've done it more than once, sometimes accidentally sometimes not, and the orchids are never (negatively) affected. My freshly repotted orchids often get an overnight soak, until the bark starts to hold water a bit better.

I've accidentally let some plants soak an entire weekend, with no ill effects!