Can Oncidiums spike a few months after you repot them?

[shiba_ennui]

Do your orchids spike just a month or two after you repot them? I have an Oncidium Aka Baby in bloom right now that I’m thinking of repotting in 1-2 months when it’s over but it’s a twice a year bloomer and I want it to spike in fall/winter. Should I wait until next year or give it a repot? The media isn’t desperately in need of it but it has a lot of algae on the roots and is in a pot that isn’t clear. Oncidium roots are just so delicate and blooming this winter is really important to me so I’m not sure about the trade off!

[estación seca]

Some intergeneric hybrids can be in near-continuous growth and flowering. They spike at the appropriate time with new growth. Some spike midway through new growth development, some right after it's finished, and some a little later. I don't know about this particular plant, but it will usually be the same at every flowering. Flowering is controlled by when the plant wants to grow, and repotting won't affect when that will be.

Oncidiums don't mind repotting too much if you do it as new roots are just forming. I would not repot one at another time. New roots may begin just as the new growth begins, or it might be later in development.

I especially would not meticulously pull out all the old medium. This will severely damage remaining roots. Just gently shake off what falls off easily.

[claypot]

Yes, Oncidiinae are super flowerers - not just intergenerics. They just seem to want to keep flowering although some restrict it to an annual event many flower twice a year. They even don't seem to object to being repotted while in spike if that becomes necessary.