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Cymbidium not blooming

This is a discussion on Cymbidium not blooming within the Genus Specific forums, part of the Orchid Culture category; Hey all, I repotted an indoor tropical cymbidium about 3 years back and to date ...

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  1. #1
    nebula_34's Avatar
    nebula_34 is offline Member
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    Default Cymbidium not blooming

    Hey all, I repotted an indoor tropical cymbidium about 3 years back and to date there's been no flowers since then. It has about 4 old bulbs (no leaves) and newer bulbs that still hold leaves. It's sending out a new bulb at the moment, but I can't seem to get it to bloom?!? It's in a south facing window and gets fertalized every other week. I try to water it once every 5-7 days. Any suggestions would be appreciated, thanks!

  2. #2
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    From what i know - which isn't all that much - 1) Cyms need extra-super-bright light and the window glass and/or screen may be blocking some; 2) Cyms need a significant temperature drop during the night when they're setting their buds - like 20+ degrees; 3) Cyms generally like it quite a bit cooler than most other orchids - south-facing window may be too warm year-round, and 4) Cyms are heavy feeders - I feed mine full strength once a month and weakly-weekly in between. I'd say light and temperature are the most likely issues, though.

    Hope this helps a bit.

  3. #3
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    I agree with mauraec , I have been told by Cym growers that they belong outdoors. Yes you will get growth but there is not enough energy to produce blooms. The light from a window is very different to outside light absorption the colour of the leaves are a good indication you want a nice lime green almost like a Granny Smith apple green its ok if it gets a little sunburnt. When you reach fall the cold night time temps will set off spikes which i have mine doing right now.

  4. #4
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    I would agree. Most likely it is the temp drop and the amount of bright light the orchid plant gets.


    cheers,
    BD

  5. #5
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    Adam - I put my Cym outdoors every Summer in a sunnier part of the deck from the rest of the orchids and it's the last orchid I bring indoors, usually in late September, early October and then it is in an east facing window for the Winter. Since I heat with oil, I set my thermostat to 55 every night at 10PM, 70 in the daytime but the kitchen is always 5 degrees colder. My Cym has just dropped it's blooms and is setting a new shoot. - martha

  6. #6
    nebula_34's Avatar
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    Default

    Wonderful tips everyone, thank you! I'll try to feed a bit more heavily and putting it (gradually) into more sun. Outdoors for the summer is feasible. In terms of temps - "how low can you go?" with cyms? I'll leave it outside into the fall - just want to figure out what's safe. Thanks again!!
    -Adam

  7. #7
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    Default

    I had a large cymbidium that I left outdoors until temps dipped below freezing. They are generally very tolerant of low temps as long as you keep a couple of things in mind...
    1. Protect from frost. Keep them on a porch or under a carport, overhang, etc.
    2. Keep close to a major structure, like your house.
    3. Don't leave them wet overnight.
    4. Lots and lots of light during the day.
    This is how people grow them here where I live. I lost mine to scale...
    Posted via Mobile Device

  8. #8
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    This is a miniature variety which is warm tolerant (chen's ruby). Can it handle temps that low? I know that typical cym's need the low temps to set spike... Just want to double check.

  9. #9
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    My deck gets a few hours of sun a day in the Summer and the rest of the time it's in dense shade. I've never left it outside until first frost, usually when overnight temps get down around 45-50 degrees I bring it in for the Winter. And for some reason Cyms and scale seem to have a symbiotic relationship, I've just noticed a new outbreak today, time for another spraying.

    martha

  10. #10
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    Default

    Posted via Mobile Device

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