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Odd Pigmentation on leaves

This is a discussion on Odd Pigmentation on leaves within the New Growers: Ask the Senior Members forums, part of the New Growers category; ...

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  1. #1
    bchd95 is offline Member
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    Default Odd Pigmentation on leaves

    Hello, I noticed this vanda of mine started getting this dark pattern near the top of itís crown. Two of my other orchids have this but it hasnít impacted them negatively. Could it be high light? Iím just curious to know what this is. I donít have a fungicide on hand. Iím sure that would be very helpful for maintenance of such things. Thatíll go in the list. So yes please any opinions/ thougts? Iíd like for this patterning to stop. One pic is the front and one is the back.




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  2. #2
    Azizan is offline Senior Member
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    I can't judge the colour from my screen. If the pigmentation is purplish, it might be due to the intense light its been getting (not very concerning). But if it is black, most probably fungal infection. Just wait for others to reply. Hang in there!

  3. #3
    bchd95 is offline Member
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    Default Fungal, Bacterial, Infection, Pigment, Highlight

    Here is a closer picture.

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  4. #4
    Azizan is offline Senior Member
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    Did you give it intense light? It does look reddish-purple on my screen.

  5. #5
    bchd95 is offline Member
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    Intermediate light, itís facing an east window. The sun rays leave after 12pm.
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  6. #6
    Azizan is offline Senior Member
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    If it is black spots and spreading, you may consider to use fungicide. If the new leaf keep growing longer, I think it should be fine. You can always private message our fellow Canadian Senior member, Chris in Hamilton for advice regarding the fungicide brand available in Canada.

  7. #7
    bchd95 is offline Member
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    @Azizan I should I do have his email. Thank you for your advice
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  8. #8
    Azizan is offline Senior Member
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    Quote Originally Posted by bchd95 View Post
    @Azizan I should I do have his email. Thank you for your advice
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    I hope things will work out for you. Good luck.

  9. #9
    bchd95 is offline Member
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    Default Itís spreading!!!

    @Azizan itís starting to spread. Chris in Hamilton hasnít gotten back to me yet through pm or e mail. Will a copper fungicide do the trick? What should I do. This feels like watching the climax of a movie. I really donít want to cut but if I have to inorder to save it tell me. Iíll bite the bullet. I have this sinking feeling.




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  10. #10
    Azizan is offline Senior Member
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    I would not cut it either. I begin to feel like it is pigmentation due to light because the region that is hidden away from light is free from the pigmentation.

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    I am not 100% sure it is due to light or fungus but you may want to play it safe.
    I have never used copper-based fungicide though. Hope this link helps http://www.rv-orchidworks.com/orchid...ide-dends.html

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