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Thread: 16 Hour Photoperiod Okay?

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    Tropical Fish Enthusiast jimscott's Avatar
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    16 Hour Photoperiod Okay?

    Some of my sundews are thriving and some are struggling. Most of them are either on the south-facing grow rack, with a light 2-3" above them or in the terrarium setup. They get ~16 hours of light per day and I'm wondering if that's too much time and perhaps leading to dormancy for the pygmy sundews. I do see a lot of stipules for the ones that look horrible.





    Whaddya think?

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    cmm889's Avatar
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    which dews are doing poorly?

    I can't see why a 16 hr photoperiod would hurt any of them...

    maybe someone can come clear it up for ya

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    Tropical Fish Enthusiast jimscott's Avatar
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    The pygmy sundew gemmae I sowed this fall.

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    cmm889's Avatar
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    i've only got a couple pygmy's so hopefully someone will come to help out, but i'd be interested in the response here becuase I run most of mine on an either a 16-18 hr photoperiod and havnt had any problems so far...

    how exactly do they look bad? like weak growth? slow growth? lack of color?

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    wow jim!how i wish i have a large sunny window like urs..very nice grow rack too..think i'm gonna follow suit if all my ceph leaf pulling strike for me..i did some 'pruning' today and end up with 32 pullings..hehe..

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    I dont see why 16 should be too long, i give mine 18 and they're doing great. I'd look for something else causing the problem.

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    mark.ca's Avatar
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    Try to post some pics. Light will not trow them in dormancy but heat sure will. I have a setup for gemmae starting and i give them 16h a day. I keep them there for the first month of their life. I did had one or 2 for longer time in there and did not seem to be affected in any way...they was just growing like crazy. Also your soil mix can be the cause of your problems with some.
    Best regards,
    Marius

    My Website: http://droseragemmae.com/

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    Tropical Fish Enthusiast jimscott's Avatar
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    There's no heat to speak of. They're in room temp. They're in a mix of mostly sand to peat. Generally speaking, the are getting distilled water. The fluorescent light is ~3" above them, with the sun shining in on them, southern exposure. Some are doing well and some look horrible. No pictures available for now. They don't grow.

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