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  • 1 Post By ksriramkumar

The red blight on my orchids

This is a discussion on The red blight on my orchids within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Hi everyone, this began to appear on a couple of divisions of Lcs, and at ...

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    Default The red blight on my orchids

    Hi everyone, this began to appear on a couple of divisions of Lcs, and at first I thought it was some discoloring on the base of the leaves. In just a couple of days it turns into a horrible black fungal infection and killed the divisions. And the same happen to its other division, potted away from the first. I tried finding out what this red death is, but I couldn't find anything.
    I'm wondering if I could hear it from you guys who might have experienced this.
    Thanks.

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  2. #2
    78Terp's Avatar
    78Terp is offline An Avant Gardner
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    I haven't any experience with this affliction. Have you treated it at all? Fungicide?

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    Just doing some searching it looks like rust which is a fungal disease. It has a high reproductive rate so the plant should be isolated.

  4. #4
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    Quote Originally Posted by sciencegal View Post
    Just doing some searching it looks like rust which is a fungal disease. It has a high reproductive rate so the plant should be isolated.
    I haven't seen red spider mites before, and that's just about the only red affliction I know with orchids. It did hit upon me that it could be rust, but isn't that more of sienna colored ailment? Whatever it is, I am now putting it in a STILT 25 bath; I soaked the plant in the fungicide bath for a few hours, and 10 minutes intermittenly from today onwards. Hopefully that will kill the infection.

  5. #5
    ksriramkumar is offline Senior Member
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    You could use Metalaxyl + Mancozeb or Thiophanate methyl. I have not used propiconazole (active ingredient in Stilt 25) not sure but other 2 are good for rots in orchids

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