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Leaf spots on a Phal

This is a discussion on Leaf spots on a Phal within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; I came home from vacation and found a couple of nasty looking spots on one ...

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  1. #1
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    Default Leaf spots on a Phal

    I came home from vacation and found a couple of nasty looking spots on one of my Phal's leaves. The flower spray looks great. A new leaf is growing. The plant is in a pot inside with a clear north window view. It was in spag so I repotted it in bark last night. Only lost a couple of roots. I would appreciate any treatment suggestions? Thanks, Joe

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  2. #2
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    Joe, look under the leaf at the spot. What do you see? Take a white paper-towel or white cloth - damp, and wipe under the leaf. Do you see red or orange color on the white cloth?

    Cheers,
    BD

  3. #3
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    Well, the paper towel does not show color after the underside wipe, but everything probably got a good rinse during the repot process. The spots are circular, wrinkled and translate through to the underside. The outer ring is light green. The centers are starting to look like brown scabs. The diameter is similar to a little finger's nail. It reminds me of an old green pepper. Thanks, Bruce.

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    I thought it might be spider mites first, but if no color on the paper-towel, then it is something else. Is it dry or slimy? Does it have any smell? If not and it is dry, then it might be sun damage that has not turned black yet. Did water or oil sit on the orchid while it was in the sunlight? That could cause a sun spot on the leaf. The circles appear to be fairly round. I suspect this is what is going on, but check for a smell and if it is wet.

    Cheers,
    BD

  5. #5
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    Dry, no smell. The plant has been in the north window so was only getting early rising and late setting sun. Should I get the saw? Only on one leaf out of ten but the spoted one is second from top. So, loss will show. Or, I could spray with an antifungal.

  6. #6
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    No, I would not cut it off. Spray -YES. First thing I do when I notice an issue. It cannot hurt. Unless you just want to, don't cut the leaf off. If it is dry and has no smell, it is probably just a burn.

    Cheers,
    BD

  7. #7
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    'K, Boss. We won't wack 'im. So's, hows abot a fungicide dat controls powdery mildew, da black spot and rust. Da boys and me 'r giving it a ride dis early am. Tanks.

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    By the way Joe, that phal probably needs more light than its receiving in a north window - you have windows that face any other direction that it might get more light? Those leaves are really dark green - indicating it could use more light.

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    Hey good morning, Becky. I believe you are right about the light level, but I have the phals spread around the first floor since the all the phals were in bloom. Joe

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