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change from w/o sheath to w/sheath

This is a discussion on change from w/o sheath to w/sheath within the New Growers: Ask the Senior Members forums, part of the New Growers category; I have a 14 pb Cattleya Artic Star 'Snow Queen' that has been blooming w/o ...

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  1. #1
    KC C is offline Senior Member
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    Post change from w/o sheath to w/sheath

    I have a 14 pb Cattleya Artic Star 'Snow Queen' that has been blooming w/o sheaths, but the last three pbs are producing sheaths. They are not far enough along to be showing buds. Why is the plant changing over its flowering technique? I bought the plant last Oct, it was in flower, but none of the other 7 pbs showed signs of sheaths.

    I'm growing it outdoors in the shade of trees in an 8" bulb pan.

  2. #2
    wetfeet101b's Avatar
    wetfeet101b is offline It's not dead! It's just permanently dormant.
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    Sometimes the plant is genetically designed to produce a sheath but variables in nature either have damaged the developing sheath or chemical stimulus inside the plant prevented it from producing a sheath in the first place.
    Perhaps now, the plant is healthy enough that it is able to produce sheaths since that is what it is designed to do in the first place.

    When early enough, the damage to the developing sheath may be enough to cause the sheath to abort but still allow the inflorescence to develop. This may explain "sheathless blooms" on orchids that typically should have sheaths.

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    KC C is offline Senior Member
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    Thank you. I liked being able to watch the buds develop instead of having it all hidden away. I guess I'll just have to settle for a happier plant.

  4. #4
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    orchid-man is offline Not Normal
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    Also it can be in the breeding line.Some plants will do it out of habit and when these plants are crossed with those that dont ,they resultant can do it from time to time.

    Its just like crossing the bi-folate and the unifolate.The resultants plants can produce iether on leave or two

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    Ron-NY is offline rothaholic
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    I have had ones do that and believe it was secondary to what Murray said!!

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    KC C is offline Senior Member
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    Thank you very much for your thoughts about my plant's situation. Obviously this plant is going to add a bit of adventure to my life.

  7. #7
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    Four years ago I bought a seedling of Arctic Star 'Snow Queen'. Just last year after throwing out one growth per year, it bloomed without a sheath. This year it has 2 new growths (baby's all grown up) the first looks like it will have 2 buds and no sheath, the second has a nice big sheath ready for buds. I'm hoping both will bloom at the same time. Attached is the first blooming of this plant. Perhaps it is maturity that encourages sheaths.
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    KC C is offline Senior Member
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    I don't think maturity makes a difference. When I bought my C. Artic Star it had 7pbs all approximately 12" tall (it's 10pm and raining outside so I'm not going to measure at this time). I think it must be mixed up genetics. As long as it flowers I'll be happy.

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    all it is, is just that the old sheaths have dried up and worn off of the old bulbs. i looked at all my catts today and theres lots of stuff in sheath flowering and all/many of the older buls have no sheath, or even rements of one for that matter...

  10. #10
    pavel's Avatar
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    Of course then there is the simplest answer for such odd behavior --- "It's an orchid"


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