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Old 05-30-2013, 08:03 PM
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Does this look like brown rot to you?

I purchased this Brassia 2 weeks ago, and is still in flower, with green, firm leaves, and a lot of roots, that although they look brown in the pics, are firm to the touch. I'm not sure if the brown spots on the pseudobulbs is brown rot or not. I'm pretty sure it is, but I wanted other opinions. The brown spots are not mushy, and are actually very firm to the touch.
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Old 05-31-2013, 01:34 AM
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I can't tell for certain from the picture but I would be concerned. I use isopropyl alcohol on anything suspicious to disinfect and dry. If I suspect rot, I perform surgery, then use the alcohol. I have dealt with both brown and black rot. Not fun. Here are two sites that I hope will help you:
Orchid Pests, Orchid Diseases
http://www.houstonorchidsociety.org/...ySueBottom.pdf
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Old 05-31-2013, 07:14 AM
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It looks to me like those areas were buried a little too deeply in the medium but if they aren't mushy then it's not rot. I've also seen some plants (Oncids and Coels) that will discolor on the pbulbs but it's nothing. Actually, I've seen it happen on my Max tenuifolia too. Dark isn't always rot...it's ugly for sure but it's not always a big deal. Same w/the roots...sometimes roots can look dark due to medium staining. To my eyes...your roots look good though.

If it were me and it were my plant...I would simply clean it up well and then repot...and watch. I never cut unless I absolutely have to cut because 1) it sets the plant back but also 2) the open cuts can actually open the plant up to all sorts of nasty things.
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Old 05-31-2013, 10:54 AM
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My pbs also get those at times, but I let them be especially if it does not seem spreading and the pb does not go mushy. Sometimes it could be just bruising fairly superficial.
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Old 05-31-2013, 11:40 AM
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Alright thanks so much everyone! I'm just paranoid when it comes to rot because I lost an oncidium in a matter of a week to a sudden and severe case of brown rot and so, when I see anything that looks remotely similar to what killed that plant, I immediately grow suspicious...after posting the pics I researched brown rot, and began to realize it probably wasn't rotting, because, for example, there is no spicy odor, which is a major sign of brown rot.
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Old 05-31-2013, 06:40 PM
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I am likewise paranoid. I went through both brown and black rot. Good luck!
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Old 06-01-2013, 11:10 PM
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i agree with Katrina as i have had this on some i purchased before also see how they are back bulbs with no leaves.... eventually the plant will absorb them when they make new growths and they will shrivel up but just keep an eye on them and make sure the bulbs are on top of the media not burried down in it.
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