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Dimpled Phrag

This is a discussion on Dimpled Phrag within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Just wondering if any of you can tell me what this is all about. I ...

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  1. #1
    murgdan's Avatar
    murgdan is offline Senior Member
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    Default Dimpled Phrag

    Just wondering if any of you can tell me what this is all about. I bought this Phrag. warscewiczianum x besseae about 8 months ago. It has tripled in size and has bloomed once for me, so it seems happy enough. But unfortunately all the leaves end up with these dimples in them.
    None of my other plants have anything like this, and I don't see any kind of nasty bugs/pests/lifesucking creatures on it I water with distilled water and let its feet stay wet. It is growing under lights---
    Should I be worried? Any ideas?
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    Default Last blooms for this one

    Just wanted to post the last blooms I had from this one. The leaves might be homely but these flowers sure weren't! It's hard to be choosy but these were really some of my favorite...
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    Very nice hybrid! The "dimples" look like cell collapse, but I am not sure (I never have that problem)...

    -Pat

  4. #4
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    whoa!!!!!!! That is a beautiful phrag. I like its deep colour, that I don't see often in the long petalled ones!

    I think it could be pest damage but I'm not certain. The cells certainly did collapse

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    Have had similar damage on 1 or 2 Paphs , i think basically it is cell damage caused by the plant being grown in low light & then exposed to higher light.
    Not enough light to cause leaf burn but enough to cause the damage.
    If i put the plant into high light(say Catt levels) these marks turn very brown but if i put them in the shade they almost disappear.
    Lovely Phrag anyway.

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    What a gorgeous flower! That's surely a keeper!

    The dimples are definitely cell collapse. It can be caused by any great stress to the plant. Too much light or too much heat are common causes, but severe stress or change of conditions can cause it. Once the leaves show the dimples, they're more susceptible to sunburn, fungus, or other opportunistic leaf stress. They're damaged, and fragile, so protect them! Further sunburn will brown the depressed areas. With cell collapse, I'll regularly spray a fungicide on the leaves during the summer when I have my worst time with fungi.

    If you haven't yet, move the plant to a less sunny spot. If temps are warm where you live, spray weekly with Physan 20, or some other fungicide at the appropriate dilution. If temps are warm, keep a fan going around the clock - that's a huge help!

    The plant can live through this, and new growth won't be effected, but remove it from the stressful conditions that caused it! Then guard it from further damage in its now weakened condition.

    McJulie

  7. #7
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    doesn't look like anything that will terribly harm the plant. the media looks more "open"--is that pot sitting in water?

    excellent color on those blooms too.

  8. #8
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    Quote Originally Posted by Jmoney View Post
    doesn't look like anything that will terribly harm the plant. the media looks more "open"--is that pot sitting in water?
    Yes, the pot is sitting in distilled water (that's ok for this one isn't it?)---and the media is just a bark/charcoal medium--(is that what you mean by "open"?)
    This was one of the first orchids I bought and I repotted it in June last year. Not sure if it's the best medium for phrags but the pot is full of roots.


    Thanks everyone for all the advice, I moved it a little further away from the lights and sprayed it well with a fungicide. Thinking back the first growth had those dimples when I bought it, and initially the new growths were fine. But I didn't really notice the new growths had dimples too 'till I moved the plants under the grow lights on my cart.

    Maybe this happened over the summer--our AC was out all summer so at times it reached almost 90 degrees in the house, and didn't really cool down below 80 at night. I tried to keep little fans blowing on all the plants, but maybe it just got too stuffy for this guy....I know it was too hot for me!

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    For what it's worth, heat can cause cell collapse as well as direct sun.

    If you think this was heat damage, then don't take the plant out of it's sunny location now - it will prefer to stay where it is. Winter certainly won't be a problem.

    McJulie

  10. #10
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    Good point, I'll put it back...and see what happens
    I know the heat definitely caused some of my cells to collapse

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