The time to repot Oncidiums is when new root growth is just beginning, so not yet.
After flowers fall they make new growth from the bases of newer pseudobulbs. Sometime thereafter the new growths make new roots. As soon as you see that, repot. If you do it at other times you damage roots and the plant is likely to be set back.
This plant grows so fast I would use a 6" or even 7". Medium is dictated by your growing conditions of temperature, humidity and watering. They should never dry completely. Oncidiums do very well in semihydroponic growing, if you were ever thinking about trying that.
Last edited by estación seca; 03-17-2022 at 01:14 PM..
|