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Cattleya leaves don't open...?

Discussion in 'Orchid Culture' started by Boytjie, Dec 20, 2014.

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  1. Boytjie

    Boytjie Out hiking Supporting Member

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    Hi all, odd problem with a Cattleya percivaliana: leaves on new growths this summer remain firmly closed, and refuse to open past the bottom. I thought it was just this plant, but then a Laelia sincorana started doing the same thing. Nothing has really changed in my culture - possibly just a bit less light. Any ideas? Thanks.
    - Stephen
     
  2. carl

    carl Active Member

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    Possibly humidity...
     
  3. wpinnix

    wpinnix William Pinnix

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    I have had that happen with Cattleyas grown indoors compared to the greenhouse. My theory is either the lower humidity is causing it, or lack of water hitting the leaves. I started taking the ones grown in the house to the sink and spray the whole plant when I water it.
     
  4. naoki

    naoki Well-Known Member

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    I have seen it only when they experience some stressful condition at a bad timing (e.g. when the new growths are pretty close to be fully opened). For example, the growth which is expanding during the shipping could stop the growth without opening the leaves, and start to make the next growth. Or they didn't get enough water (e.g during the travel) at a bad timing. Or a growth which started to grow in a wrong time of the year (e.g. shipped from Southern hemisphere to North). But since you haven't changed the culture, this is probably not the case.