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Problem with phrag flowers not opening

This is a discussion on Problem with phrag flowers not opening within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; I have a Phrag that is on its third bloom. None of the previous flowers ...

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  1. #1
    nicki is offline Senior Member
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    Default Problem with phrag flowers not opening

    I have a Phrag that is on its third bloom. None of the previous flowers have fully opened despite being ready. It seems the sepals do not want to completely separate leaving the flower mostly closed and deformed. Any ideas what could be causing this?

  2. #2
    78Terp's Avatar
    78Terp is offline An Avant Gardner
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    Personally, I help those buds that are 'sticking' together open.

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    PaphMadMan is offline Senior Member
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    Low humidity, too warm, spider mites... just 3 of the possibilities. Or it could be a genetic problem with your plant if it has never flowered normally. Can you tell us more about your conditions and culture? Plant healthy otherwise? Picture might help.

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    nicki is offline Senior Member
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    Humidity is good. No less than 60 and at times over 80. The warmest it can get up to is low 80's by end of day. Due to it's height it is closest to the lights. A fan runs near constant.

    These are the first set of flowers on the plant since I've had it. The plant looks healthy to me and has even put out a new growth. I did poke around with it gently last night to see if I could loosen the sepals some. When I checked it this morning some of it has started to separate which is the most progress any of the buds have made.

    I took some pictures and noticed another flower bud. How many more flowers can I expect? I've raised the lights and lowered shelves several times now.






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    I think the real question is how long have you been waiting? Plant seems healthy enough and as long as the buds aren't blasting or shriveling, I would just wait and see.

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    Ron-NY is offline rothaholic
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    I too was thinking that it could be a genetic anomaly

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    nicki is offline Senior Member
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    That's disappointing if it is a genetic anomaly.
    I'm not sure how long I've been waiting for this one. I know I waited plenty long for the first one. It stayed partially split & so the flower could not form properly. The 2nd wouldn't open and then fell off. But this one has gotten further than the rest so maybe 3rd time's a charm. I helped it open a little more earlier and will post a picture tomorrow. All of you would know better than me if it's coming along OK or not.

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    PaphMadMan is offline Senior Member
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    Now I'm wondering if it is too close to the lights. That could be a much warmer drier position than your general conditions. Like any surface in bright light, the flowers could be getting baked by radiant energy.

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    nicki is offline Senior Member
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    I lights I have are HO T-5s
    Here it the flower today


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    If it's not genetic, I believe it all has to do with poor vascular pressure - for some reason, the plant isn't able to "pump up" the blossom to get it to fully open. That can be due to insufficient absorption of water (bad roots or just kept too dry), or excessive loss of moisture from the bud, that is, something is "sucking it out", whether that be a pest or the growing conditions.

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