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Phal disease?

This is a discussion on Phal disease? within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; A few of my phals have developed unsightly discoloration. My violets did something similar and ...

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  1. #1
    nagal1 is offline Member
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    Default Phal disease?

    A few of my phals have developed unsightly discoloration. My violets did something similar and I almost threw them out. However, after treating with
    Physan they have recovered. This particular phal looks healthy otherwise and has a spike. Can anyone identify this? I am hoping it is the same problem as my violets and that Physan(I have already started to treat) will work. I am hoping it is not a virus.
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  2. #2
    Brutal_Dreamer's Avatar
    Brutal_Dreamer is offline Dreaming with my eyes open...
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    Anything under the leaf? Take a white, damp paper towel and wipe the underside of the leaf. Do you see any orange or reddish residue on the paper towel?

    Cheers,
    BD

  3. #3
    nagal1 is offline Member
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    There is nothing under the leaf. I see no other sign on the plant. No bugs or signs of bugs.

  4. #4
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    Did this plant get cold? Could that be cell collapse? What type of phal is this? Is it only one leaf of this plant? Maybe this leaf was against a window? Give us some more details. In the photo, the leaf appears very smooth except for the very left side of the photo and the spots appear to raise up out of the leaf. Can you verify this?

    In the meantime keep this plant separated from your other plants. You mention in the first post that a few of your phals are like this. Can we see some more photos? My first reaction was a mite or pest. Maybe a shot of the grow space with the orchids in their regular place and some closeups of the problem leaves.

    Cheers,
    BD

  5. #5
    nagal1 is offline Member
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    Default Phal disease

    The leaves on this plant are smooth. there are 3 affected leaves and the others look healthy. It is Phal.(Brother Lawrence x Melodious Bells). The other pics are of another affected plant - CLMC -YST- P.Salu Gold Star x P. Chin Shan. It does have pitted areas although it has healthy leaves too. I'm not even sure they are exactly the same disease or maybe the second plant has additional problems. Unfortunately I can't show the plants in their usual location as this morning I took all the plants out of the window they are usually in and disinfected that whole area. It is still in transition as I have to organize my orchids throughout different parts of my house. I removed the few that looked diseased and only put back "clean" plants. It is a bay window as you can see and it does get very cold in the winter at night. None of the plants touch the windwos though and the "sick" plants were actually nearest to the sink area.Name:  orchi disease 002.jpg
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  6. #6
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    I had those spots on some of my phals, but only one or two (spots that is). I associated it with some scale that I was trying to get rid of, but I am no expert.....

    Anna

  7. #7
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    Looking at the pitted areas... cell collapse? Possibly due to uneven watering?

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    It looks like a couple of issues. The pitted areas and the discolored areas. I believe it was a pest of some kind that caused the discolored areas (my original assumption). You probably killed whatever it was when you sprayed. And the cell collapse is from either cold temps or, as Cindi pointed out, uneven or irregular watering. That is my best guess. If you do not see any signs of pests (mites or scale), then spray again about 7 days after the first time you sprayed. Keep an eye on them and you should not see any more discoloring if you actually got the bug that caused the problem. The cell collapse can be avoided (not reversed) by regular, scheduled, even watering. I recommend watering at the root level and avoid getting water on the leaves.

    Since your phals that were affected were near the sink and not the window, the temp problem may not be the cause. Other wise the orchids nearer the windows would have had problems too. Is it possible that something sprayed onto the ones near the sink? A little oil and a little sunlight can damage a plants leaves too. The oil would work as a magnifying glass and could cause burns on the leaves. Or perhaps some water got sprayed onto the leaves in the late evening or at night and then with the temp drop, caused the discoloring?? I am really just guessing here at this point.

    Anyone else have an idea?

    Cheers,
    BD

  9. #9
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    in this pictures ,i believe your leaves was burned by high light

  10. #10
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    I agree with the above posts . Several years ago I bought Phrag. seedlings I put them in an area that was too cool ?? they started to show the mottling I moved them to a warmer area the problem stopped, they are now big blooming plants ..Also as BD said maybe a fine fog from a cleaner settled on them ? Gin

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