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Old 10-24-2012, 08:33 PM
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Oncidium dropping Leaves

My oncidium is quickly going downhill and is dropping leaves after they turn yellow. It dropped 3 just yesterday! I checked my roots and they are a little rotted but not horrible. I don't think that is the cause.. is this a possible fungal problem? I was going to spray it in the morning. Any thoughts or help appreciated. I have had it since February and really don't want to loose it as it is my oldest orchid
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Old 10-24-2012, 08:51 PM
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It looks rather dehydrated… I'm not sure the roots are that fine.

I can't see something that looks like fungus or else.
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Old 10-24-2012, 10:29 PM
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I agree with Lepetitmartien , those pseudobulbs look more wrinkled than they should be. It looks like the leaves are dropping from the older, more dehydrated bulbs. Your potting medium looks pretty large and chunky for the fine roots of an oncidium, although it is hard to see in that first picture. You might want to try a finer mix. Are you using the skewer method of monitoring the moisture in your pots? Oncidiums don't want to get very dry at all, but they need air to the roots also. Personally, I like a fine bark mix with some perlite and charcoal. If you have seen rotted roots, I would think it is time to re-evaluate your potting medium.
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Old 10-25-2012, 01:33 AM
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Those pseudobulbs are severely dehydrated. They shouldn't be nearly that wrinkled. This could indicate a problem with the root system, or habitual underwatering. Personally, I'd chuck it and start over.
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Old 10-25-2012, 02:12 AM
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Agree with everyone's observation..poor thing looks too dehydrated...my oncidiums loves water a lot...you may have to consider adjusting your watering method or change the media..good luck.
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Old 10-25-2012, 08:37 PM
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Oh no! For fear of over watering I may not be watering enough! Thanks for your feedback, I will repot in a smaller medium and give a little more water to try and help it. It has two new bulbs it grew that are very plump. Thanks!
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Old 10-26-2012, 01:47 AM
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LovePhals, Trev makes a good point. When people are first learning about orchids, there are sooooo many warnings about making sure you don't overwater. I did the same thing when I was a beginner. I ended up grossly underwatering, lest my plants get soggy and rot. Lost a lot of plants that way. With the exception of catasetum and certain deciduous Dendrobious which have a definite rest period where they like to stay dry, no orchid likes to get bone dry. This could be your problem. Habitual underwatering is just as dangerous as overwatering.
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Old 10-26-2012, 10:55 AM
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Quote:
Originally Posted by Fishmom View Post
I agree with Lepetitmartien , those pseudobulbs look more wrinkled than they should be. It looks like the leaves are dropping from the older, more dehydrated bulbs. Your potting medium looks pretty large and chunky for the fine roots of an oncidium, although it is hard to see in that first picture. You might want to try a finer mix. Are you using the skewer method of monitoring the moisture in your pots? Oncidiums don't want to get very dry at all, but they need air to the roots also. Personally, I like a fine bark mix with some perlite and charcoal. If you have seen rotted roots, I would think it is time to re-evaluate your potting medium.
I repotted in a fine "Oncidium" Mix from repot me. I kept it in my very airy duo core pot from there as well. There is a new growth that I thought was a spike but it actually has two roots coming from it. So I have gotten 3 new growths this year that have some ok roots so I think I should be able to recover it. I will give it more water this go round and try the skewer method. Hopefully she will be ok!
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Old 12-07-2012, 05:50 PM
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Update on Oncidium Sweet Sugar

Hi all. I am posting because my Oncidium has not dropped any more leaves thank goodness... but two of the oldest bulbs have some brown. I wouldn't say they are 'mushy' per say but they kind of are... more papery now than anything. They aren't seeping or anything. Not sure if this is ok.
The newest bulbs look pretty good and plump. Looks like the newer also has a spike starting (middle picture). This will be the second rebloom since I got this orchid in February. It is very important to me so I won't chuck it. I am really trying to revive it. Please let me know if I need to cut of those back bulbs or if that is ok.
Thanks!
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Old 12-08-2012, 02:25 AM
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For the old PBs, if they are drying alone, I'd leave them till it's dry of dry. PBs do die you know, of old age. Here it may be that the draught was too much and the orchid sacrificed them to survive. Next time you repot if they are not gone you'll take them off.

Now I don't think it's a spike, but it's going to grow a new PB. You're never really sure where PB will grow, but a spike will always be from the edges of the PB.
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Old 12-09-2012, 05:24 PM
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Thank you so much, Lepetitmartien!
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Old 02-23-2013, 01:36 PM
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My Oncidium seems to be recovering very well thanks to everyone's advice! The new bulb from my last growth now has leaves, and a new one is starting on the other bulb. Every leaf dropped from the older bulbs but two are still green. I had 3 dry back.
As you can see from my photos all my new bulbs are still nice and plump, I have a new bulb starting, and I can see SEVERAL new roots starting in my medium, which I changed from your suggestions. I have a smaller lava rock mixed in with some small bark chunks and perlite. The first pic you can see new roots starting, the second the whole plant, and the third pic is yet another bulb starting (from another blulb by the bamboo skewer). THANKS for helping me save it!!
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Old 02-23-2013, 02:41 PM
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That's looking MUCH better!
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Old 02-23-2013, 04:52 PM
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Those psuedobulb still look pretty dehydrated. I have great luck with oncidiums, and do somethings people on here might not think are good ideas but they work for me. With a plant that's in the shape of the one you posted. I would take the whole plant and pot, submerge it in water and let it soak overnight. I then would let it sit for a few days and repeat the process. I also keep mine sitting in a tray with a good bit of water surrounding the bottom of the pot. I have taken plants that look about in the shape of yours and nursed them back to great health with nice plump psuedobulbs.
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Old 02-23-2013, 05:04 PM
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Those wrinkled bulbs are the old ones. The new ones look to be in good shape.
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Old 02-23-2013, 05:27 PM
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I agree they are the old bulbs, but even when I have gotten plants with bad looking old psuedobulbs, you can still get them to plump up more than those. The better the older bulbs look the better for the entire plant, those are the energy stores for future growths.
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