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  • 1 Post By swtheory1986

How dark should 'night' be?

This is a discussion on How dark should 'night' be? within the General Orchid Culture forums, part of the Orchid Culture category; When growing indoors and controlling daylight and nighttime, how dark should night be? I thought ...

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  1. #1
    nicki is offline Senior Member
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    Default How dark should 'night' be?

    When growing indoors and controlling daylight and nighttime, how dark should night be?
    I thought I once read that even having a nightlight on could mess up a plants cycle. But plants outdoors get various amounts of light depending on their location at night.

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    pavel is offline change is the only constant
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    Nicki, I've never made any effort to give my orchids a 'pitch black' night. And considering I live in an apt on a busy street in a small city, there is ALWAYS light of some degree. Never had an issue.

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    swtheory1986 is offline Senior Member
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    Hi, Nicki not sure which or if orchids fall into this category because I think the majority of orchids flower based on temperature changes, but some plants (long-night plants) require a certain amount of uninterrupted darkness in order to flower. Same holds true for short-night plants, growers have discovered that if the nights are long these short-night plants can be flowered out of season by having all the lights come on at once at night for only a short time. It also has a lot to do with the spectrum of the light that hits the plants as well, I hope this helps. If you want an explanation in greater detail just PM me and I'll send you my notes from class.

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    nicki is offline Senior Member
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    Thanks Shane.

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