Orchids forum: Oncidium Pseudobulb Issue

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(Zone 5b)
Brian1048
Aug 6, 2018 7:22 PM CST
Hello all,

Recently I purchased my first oncidium orchid (the Sharry Baby variety) and have encountered an issue. Since bringing it home, there has been a brown spot developing on one of the pseudobulbs, and I am at a complete loss over what to do about it. Does anyone have any advice as to how to remedy this situation? I will attach some photos down below.

Thank you,
Brian
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Name: Ursula
Fair Lawn NJ, zone 6b
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Ursula
Aug 7, 2018 7:17 AM CST

Moderator

Brian, I am looking at your plant and I am thinking that this pseudobulb might be on its way out. You have a lot of new growth, so I wouldn't worry. I would just make sure that the plant is properly watered, the medium isn't ancient, light conditions are good and the plant is in an airy spot.
(Zone 5b)
Brian1048
Aug 7, 2018 8:00 AM CST
Ursula,
That is fantastic to hear, thank you for your help!
Name: Jim Hawk
Odessa, Florida (Zone 9b)
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hawkarica
Aug 8, 2018 2:16 PM CST
Yes, I agree that pseudo bulb is on the way out but if it were mine, I would cut it from the plant with a razor blade. I'm worried about black rot moving into the main plant.

Jim
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Name: Bill
Livonia, Michigan (Zone 6a)
Orchid Judge
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BigBill
Aug 8, 2018 5:21 PM CST
I agree with Jim. Why take a chance?
Cut through the rhizome ASAP and treat cut with cinnamon.
Unpot the plant first. If it spread to the roots, you want them out of the pot as soon as possible.
Just look at the fresh cut and make sure that the tissue is clear green in color. If it is, it probably has not spread. If it is discolored, remove tissue until it is clear.
"Our children are the messages we send to a time that we will never see."
(Zone 5b)
Brian1048
Aug 8, 2018 5:58 PM CST
I will be sure to cut off that particular bulb and to repot the plant. Thank you all for your help!
Name: Bill
Livonia, Michigan (Zone 6a)
Orchid Judge
Region: United States of America Echinacea Hostas Region: Michigan Butterflies Lover of wildlife (Raccoon badge)
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BigBill
Aug 8, 2018 6:20 PM CST
My pleasure.
"Our children are the messages we send to a time that we will never see."
(Zone 5b)
Brian1048
Aug 8, 2018 10:12 PM CST
I hate to be an irritance to everyone, but another bulb seems to have become wrinkled and spotty looking.
Thumb of 2018-08-09/Brian1048/109caa
Should I remove this one as well? Again terribly sorry for being so helpless, I'm new to Oncidiums and don't want to mess this up!
Name: Bill
Livonia, Michigan (Zone 6a)
Orchid Judge
Region: United States of America Echinacea Hostas Region: Michigan Butterflies Lover of wildlife (Raccoon badge)
Orchids Cat Lover Birds Dahlias
BigBill
Aug 9, 2018 4:47 AM CST
From what I see in your image, there isn't any issues with that bulb. It looks fine.
A little bit of cosmetic damage such as bruising, is what I think that I am seeing here, is to be expected. I think it is hard to grow perfect looking plants!
I think you are okay here! I tip my hat to you.
"Our children are the messages we send to a time that we will never see."
(Zone 5b)
Brian1048
Aug 9, 2018 3:03 PM CST
Thumb of 2018-08-09/Brian1048/71d17f

I removed the bulb, and found a load of soggy roots! Thanks again for all your help, my plant looks so much better without that decaying bulb present!

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