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Thread: Question on Temperature Drop

  1. #1
    slau
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    Hi everyone, I had a question about temperature drops for Highland plants. I've read a lot of literature that says it's useful to provide Highland neps with a temperature drop at night. However, which of the two circumstances is better:

    1) warm day conditions, and cold temperature drop at night provided by air-conditioning
    2) cold day conditions and night kept constant by the same air-conditioning

    The warm day conditions will be 86 degrees and above. The cool air conditioning temperatures will be around 70. I live in a tropical zone. So what I'm asking is if it is better to expose the plant to outdoor conditions during the day, option one, or to keep it indoors the whole time in artificial air-conditioning, option two.

    Is the drop better, or keeping the plant cool all day better? I grow mostly low land plants until now, and I'm going to venture into my first few Highland plants soon and I thought I would ask for some advice on which of the two is better for them.

  2. #2
    Tony Paroubek's Avatar
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    Highland Nepenthes should warm up during the day. Into the mid 80s is fine. I think however you will need to choose carefully because 70 at night is not highland temperature. At best I would consider that intermediate. If you are looking to grow true highland plants you need to aim for at least 55 at night.

    Tony
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    Slau,

    Never, ever, ever, ever, EVER use 70 degrees and COLD in the same thought!




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    Always a newbie glider14's Avatar
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    Quote Originally Posted by [b
    Quote[/b] (schloaty @ Jan. 08 2007,7:19)]Slau,

    Never, ever, ever, ever, EVER use 70 degrees and COLD in the same thought!
    what?
    anyways i would also say it to be an intermediet. my 2 terrariums both get down to 60 at night just from temperatures. one i consider a cooler intermediate tank but not fully highland. it gets up to 75*. the other is a warmer intermediate and gets up to 80*. both are very successful especially the latter one. i think if you use an AC you need to humidify the air or your humidity and plants will quickly dry out!
    Alex
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  5. #5
    Nepenthes Specialist nepenthes gracilis's Avatar
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    Humidification will be a must with an AC unit, unless of course you are cooling an enclosure within an enclosure (box within a box) setup.

  6. #6
    It's been one of dem days BigCarnivourKid's Avatar
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    Quote Originally Posted by [b
    Quote[/b] (slau @ Jan. 08 2007,7:19)]The cool air conditioning temperatures will be around 70.

    That's how hot I keep my house during the day in winter.
    ---Steve Allinger---

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  7. #7
    slau
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    Thank you for the advice. I actually plan to slowly harden off the neps to low humidity airconditioning.

    I live in a tropical zone in South East Asia and humidity is generally high. In my particular growing conditions however, it drops down to 30% during the day when it gets hot and windy so my neps are growing under very fluctuating humidity.

    Having said that, I've read a few topics of folks who have successfully grown highlanders under "tropical" conditions. Unfortunately, those "tropical" zones include Hawaii and Taiwan, which is nothing at all compared to South East Asia's real tropical weather.

    I thought I'd try a ventricosa, ramispina, and lowii to see how they do in the above conditions. I hope I'm not about to fry some plants.

    All things considered, temperature drop is better than a constant 70 all day I conclude?

  8. #8

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    Slau,

    "Highland" is also relative. Ventricosa is a "highland" but it grows just great in Atlanta, GA which is known to be rather warm (nick-name of Hotlanta). Correct me if I'm wrong, but ventricosa and sanguinea and similar plants are more "intermediate" and aren't as sensitive, but lowii probably wont like those "warm" temps.
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