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Thread: BLACK BLOTCHES

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  1. #1
    Join Date
    Nov 2005
    Location
    Wisconsin
    Posts
    84

    Default BLACK BLOTCHES

    Hi everybody I just had my sisters ship me a bunch of my plants from home in Wisconsin down to my apartment here in Davie FL, where I go to school. I have only had them down here a few days and one of the bulbos. is developing black blotches on the leaf. I first noticed it as one big blotch the size of a fifty cent piece and now there are many smaller ones on the other leaves. I am wondering if it is too much light? Any ideas?

    thanks Aaron G

  2. #2
    Real Name
    Bruce Brown
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Cattleyas & Slippers
    Join Date
    Mar 2003
    Gender
    Male
    Location
    Arkansas
    Posts
    35,143
    Member's Country Flag

    Default

    It does sound like sun burn, but without a photo, it is hard to tell. If the plant is getting direct sun, that would be my guess.

    Cheers!
    BD

  3. #3
    Join Date
    Apr 2006
    Location
    Ohio
    Posts
    41

    Default

    One of my new dends has small black spots I noticed this morning.(Didn't have them when it arrived a few days ago. Is that more likely to be sunburn than fungus? I will move it. However, do want to know if I can use regular plant fungicide which I have plenty of, or do I need to get something special for orchids? Thanks.

  4. #4
    Join Date
    Dec 2004
    Location
    Massachusetts
    Posts
    7,068

    Default

    Orchids don't require anything special. Regular plant fungicides are fine.

    McJulie

  5. #5
    Real Name
    Tim
    My Grow Area
    Porch/Patio.
    Favorite Orchid(s)
    Paphiopedilums
    Join Date
    Jan 2005
    Location
    Sydney, Australia
    Posts
    5,480
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    if the black blotches start off being wet and then dry out... then I would also consider fungus... so spray with a fungicide and up the air flow.

  6. #6
    Join Date
    Nov 2005
    Location
    Wisconsin
    Posts
    84

    Default

    Thanks for the suggestions. I moved the plant to a spot where it gets the least light possible in my growing area and I dipped it in physan this morning. Hopefully one of these ideas will work.
    Aaron G

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