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Small yellow spots, other problems with Den. woodsii leaves

This is a discussion on Small yellow spots, other problems with Den. woodsii leaves within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; I bought a Den. woodsii a few months ago. A couple of weeks after it ...

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  1. #1
    JC Espinosa's Avatar
    JC Espinosa is offline Junior Member
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    Default Small yellow spots, other problems with Den. woodsii leaves

    I bought a Den. woodsii a few months ago. A couple of weeks after it arrived, I noticed tiny yellow spots on two of the leaves. I thought the problem might be thrips or mites, but after taking a Xanax, I continued investigating and found no evidence of either. There was/is nothing on the underside of the leaves. The plant has been set apart for weeks - the spots are still there, the leaves have not deteriorated any further. However, there is evidence on two other leaves of some sort of viral infection. That is now the bigger worry.

    I am a novice and maybe a bit paranoid, but I am ready to incinerate the poor thing. Can someone help me identify the maladies and suggest a course of action? I took the pictures earlier today.

    JC in Miami
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  2. #2
    Katherine's Avatar
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    Might try some Pysan 20, I don't like the black spots, could be fungus. Keep isolated.

  3. #3
    Carolla's Avatar
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    I would keep it isolated, treat it for fungus and be sure it gets good light and air movement. It may be a bit wet? What's going on with the roots? And, I have no idea about the light colored spots, I'm hardly more than novice myself. I am learning a lot here though!

  4. #4
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    Zainal Abidin Bin Othman
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    Hi JC Esp. I noticed dendrobium under section Latouria they are very susceptible to developed yellow spots mine also had the same thing I have to cut the leaves in order to prevent spreading as Carolla said isolate them and treat accordingly some of my dendrobium just leafless because of this bugs.

  5. #5
    Carolla's Avatar
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    Zain, what causes the yellow spots?

    My poor dendrobium has a lot of black spots, still fighting to keep ahead of them, though it grows like mad.

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