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  • 2 Post By espranch
  • 1 Post By Halloamey

Effects of Environment Change on orchid plants

This is a discussion on Effects of Environment Change on orchid plants within the General Orchid Culture forums, part of the Orchid Culture category; I've been growing my plants indoors for about a year and a half now, most ...

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  1. #1
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    Default Effects of Environment Change on orchid plants

    I've been growing my plants indoors for about a year and a half now, most under lights. As many of you know, I just finished setting up my small greenhouse and moved my plants outdoors. They're doing great but they're doing strange things. Firstly all the root tips (still actively growing) are turning redish. Also, whereas in the home, the arial roots were sprawling out reaching everywhere, they have now taken a turn at the tip reaching back towards their mount. Some bends are even up to a 90 degree angle. I don't think either of these are bad things, but I was wondering what would cause this? Is is solely the daylight, or is it a combination of factors??

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    Hope some one answers cause I have this same thing going on. Is this happen to all yours or just specific types of orchids? So far only my phals are doing this, since I moved them from a south-western glass door to a north-eastern kitchen window shelf because the sun has shifted.

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    At least I'n not the only one...It's happening to all my orchids...Phal, Vanda, Vandanopsis, Oncidium...etc. The Only ones not affected are the Slippers...lol, no arial roots.

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    The growing tip should be light green...not reddish. The tips might be getting too much light! As far as the roots...It's MY opinion that they are seeking moisture/or something to hold onto. I do grow in a greenhouse, and there is a HUGE difference from growing indoors ( I've done both )...Betty

  5. #5
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    K, they're still in the house it just a new spot where they're getting more morning sun, before they were getting mostly afternoon light. I did the paper and hand light test yesterday in the old spot and they were in full shade by 11, it's 'shady bright' at the same time today in the kitchen. Is it just the shock of light intensity that's causing it or the type of light, morning verses afternoon? Does this mean I have to move them back or should I wait for them to adjust?

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    I agree with Betty, I think it is the humidity that is causing the roots to grow back towards the mounts, low humidity will also cause the root tips to die back.

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    My Humidity is between 50 - 70% depending on the day...Leaf color hasn't changed a bit on any of the plants, and I'm getting new roots & shoots on plants that haven't done anything in months. Could it also possibly be the changing angle of the sun during the day and the "new" UV rays their experiencing different from the flourescent light their used to??

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