Bob - I don't know if this helps or not but this is what the Sonoran Desert Museum has to say about this orchid: Alamos Orchids; Oncidium cebolleta
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This is a discussion on Oncidium Cebolletae Orchid experts out there? within the Oncidium/ Intergeneric Information forums, part of the Frequently Asked Questions category; Hi Betty, I just took the Oncidium out to repot. I was expecting the roots ...
Hi Betty, I just took the Oncidium out to repot. I was expecting the roots to be in worse shape then they appear to me, because I'm
sure I've been overwatering. What do you think?
Thanks Martha. I've heard some of this but not all. It's been hard finding info. It's good to have a better picture of how it grows - makes even more sense of what Betty had to say. It was good to see the last photo, with roots around the plant. Mine is beginning to do that, and I wasn't sure if I should keep burying them, guess it dosen't really matter.
It sure looks like one tough plant hanging out there on a rock wall, good luck with it - martha
I bought one early this year and it is mounted.
A few weeks back I noticed a small flower spike which has grown to about 40+ cm and the first buds are about to open.
I grow it in an intermediate/warm GH, medium light with a little bit of sun in the late afternoon. It gets sprayed and manured every day. It is also growing new bulbs so I must be doing something right.
Good luck with yours!
Doesn't sound like ANY of you are doing anything wrong! I grow my oncidiums in bark, or LECA; they also do well mounted ( I have several that are monted ) Bob,if it were mine, I'd soak 60% fine fir bark, 20% charcoal & 20% perlite overnight. Pick out a pot with very good drainage (slits on side & holes on bottom) that is slightly larger than the root ball. Trim off ALL dead roots with a sterile knife. Put stryofoam peanuts or lava rocks in the bottom of the pot. Now position the plant in the pot and fill with the fir bark/charcoal/perlite mixture. DO NOT WATER FOR AT LEAST SEVEN TO TEN DAYS! This is the way I re-pot most of my oncidiums...Betty :-)
Sounds good. I've already done everything you've suggested, except I was planning on watering in a few days, now I won't. Glad you mentioned that.
Can't wait to post a photo with a huge cascade of yellow blooms! Thanks again, Bob
You're quite welcome, Bob. I'm happy that I could help you. By the way...after re-potting ANY orchid, I let them wait a week to ten days (depending on pot size) for water. I have found that oncidiums especially like to dry between waterings. I bet you'll have a flower spike this coming Fall...Betty :-)