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Question Pseudobulb rot

This is a discussion on Question Pseudobulb rot within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Over the years several of my Cattleyas have developed pseudobulb rot. I have tried various ...

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  1. #1
    sammywolffox's Avatar
    sammywolffox is offline Senior Member
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    Dean Donehoo
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    Mar 2012
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    Default Question Pseudobulb rot

    Over the years several of my Cattleyas have developed pseudobulb rot. I have tried various published remedies with no success. When one of my Catyclias developed rapidly spreading pseudobulb rot, I decided to try something different. I soaked the plant and medium in a broad spectrum fungicide I use in the garden. The active ingredient is Chlorothalonil - 12.5%. I used one tablespoon per gallon. I repeated the treatment three times at four day intervals. I have waited a month and the plant is producing new growth with no signs to the disease. I would like to ask the experts if this treatment has promise or if I have simply been granted a temporary reprieve.

  2. #2
    tucker85's Avatar
    tucker85 is offline Senior Member
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    Jeff Tucker
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    Cattleyas, Phalaenopsis, Vanda
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    Jan 2011
    Plantation, Florida
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    A temporary reprieve from fungus problems is all us orchid growers can ever hope to accomplish. Here in South Florida we are constantly battling fungus. It sounds like you did a good job on your orchid.You may want to consider treating monthly as a preventative solution. I use a fungicide once a month during our wet season.

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