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Cattleya Problem

This is a discussion on Cattleya Problem within the New Growers: Ask the Senior Members forums, part of the New Growers category; This has me stumped. On an otherwise healthy looking Catt the leaves turned from this, ...

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  1. #1
    ischel1's Avatar
    ischel1 is offline Senior Member
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    Default Cattleya Problem

    This has me stumped. On an otherwise healthy looking Catt the leaves turned from this, (this years growth)
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    to this in one week
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    I thought at first that it had got too cold, 64 but now not sure. It's in bark under lights with all the other catts. Never had this before, can someone please advise me? More leaves on the same plant turning also. The streaks you see are purpleish and then the leaf turns black.

  2. #2
    clintdawley's Avatar
    clintdawley is offline Wrapped in metal..wrapped in ivy...
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    I would say something like that is either a fungal or bacterial infection (my vote, I think, is bacterial). Do the leaves smell really bad when you squish them (my guess is yes)?


    You may want to douse the plant in something like Physan 20 or similar and keep it on the dry side.

  3. #3
    Brutal_Dreamer's Avatar
    Brutal_Dreamer is offline Dreaming with my eyes open...
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    It is bacteria. I agree with Clint. Spray it well and make sure you run a fan to dry it off between watering.

    Cheers,
    BD

  4. #4
    ischel1's Avatar
    ischel1 is offline Senior Member
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    Thanks Clint and BD. Will do that now!

  5. #5
    Bikerdoc5968 is offline Senior Member
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    here's my 2 cents worth...and it is only worth that much since I'm new at this, too. It looks like what I've seen pics of Black Rot Fungus. I have used RD-20 (same exact formulation as Physan 20) and another product called Proforce made by Ecolab. I'm sure if you do a search, you'll be able to find it. I have found since using these products, the incidence of bacterial/fungal problems has decreased dramatically! I just use a garden sprayer with a fine mist and it works for me in my GH. Also, since you live in a "relatively" warm area, take plants outside to spray because any of these disinfectants are nasty, nasty nasty for us humans.

  6. #6
    ischel1's Avatar
    ischel1 is offline Senior Member
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    Yes they are toxic. It was relatively warm today and I did just that. Thanks Biker Doc for your "two cents" which btw is invaluable.

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