| I repot at the very first sign of roots starting from the new growth. Waiting for 2" to 3" is dangerous, because if you damage these roots in the repotting, you may get no further root activity. A difference of 3 weeks or so is not going to make any difference to the out come, but damage to these roots can leave the plant rootless for a year.
A good indicator of time to repot is a mix that starts to hold too much water or for too long. Also, bark can be tested for condition by pressing down on the top of the bark. If your finger goes into the mix, the plant needs repotting at the next opportunity (new roots from new growth).
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Cynthia
Prescott Orchid Society  |