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Thread: Highland Problems

  1. #1

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    Arrow

    I just wanted to know why my plants are doing this: The leaves are smaller and the pitchers are smaller. On some, like the Ventricosas the change isn't real dramatic but my fusca has now started growing faster with fairly average leaves and puny pitchers. [img]http://www.**********.com/iB_html/non-cgi/emoticons/sad.gif[/img] All the lowland plants are fine and one Amp is even has two sprouts at it's base. I can't think of any other reason for this to happen... [img]http://www.**********.com/iB_html/non-cgi/emoticons/confused.gif[/img]

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    Tony Paroubek's Avatar
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    Can you describe your set up.

    Type and duration and intensity of all light sources (including the sun)
    Temperature range between day and night.
    Moisture levels?
    Are you feeding the pitchers?
    Tony



    Is that a Nepenthes in your pocket or you just happy to see me?

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    I THINK that as with cephalotus, it goes strong light = small wi/ lots of colour (protecting from burn, and the fact that they dont need to spend as much energy to get what they need from the sun, hence the smaller leaves), and vica versa for bigger leaves... They are bigger kuz they need as much surface area to absorb sun as possble, but the colouration is bad kuz its not protecting itself from burn...

    I THINK thats how it is, but don't quote me... I'm guessing theres a huge error in my logic...

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    Tony Paroubek's Avatar
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    Yes Parasuco that is true. Plants will often make smaller, thicker, lighter green leaves when they are subjected to higher light levels. My plants tend to get smaller when they establish in my greenhouse. Usually by the time they are back to the size when I got them, the pitchers are much larger than when they originally arrived.

    There is one troubling point that Gafoto makes though...
    Quote
    and the pitchers are smaller[/QUOTE]
    There are a number of reasons why this could be. Or a combination of factors. More information will be very helpful in determining what might be the problem
    Tony
    Is that a Nepenthes in your pocket or you just happy to see me?

  5. #5

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    As Tony already pointed out, leafes do get much thicker when grown under high light levels. And they are also much sturdier than the ones grown under low light levels. Touching them with your fingers will tell you what is happening.

    Joachim

  6. #6
    Nepenthes Specialist nepenthes gracilis's Avatar
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    And thicker leaves means better toleration of environmental changes. IE: humidity fluncuations,pests,disease. And thicker leaves means a healthier plant.

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    They had been living in a much smaller terrarium but now they have a little bit more room. The day tempeture is between 84 and 90 degrees during the day and drops down to about 75 at night. I have a hygrometer which is wildly accurate but shows be big changes in humidity which I alwa counter with misting. They aren't sitting in water and they're about 7-8 inches away from the light. They seemed to bet doing fine after I transplanted them from the small terrarium this spring. The only major climactic change might have been the air conditioner going on. This doesn't seem like it would help but it keeps the terrarium from getting up to a roasting 95 during the day and I don't have any problem with it dehumidifying the air. I'm so confused... Even stranger is the fact that the N. Fusca is producing leaves quite quickly, and seems far healthier (Except for the tiny pitchers) than before. There, I'm done. [img]http://www.**********.com/iB_html/non-cgi/emoticons/biggrin.gif[/img]

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    Tony Paroubek's Avatar
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    well light sounds fine. Humidity should not be an issue inside a terrarium even with AC going in the room. Unless it is fairly open but that is not the impression I get.

    I am figuring your temps are too high. The temperature range your indicating 75 night 85-90 day is lowland conditions. The 85-90 day is not the end of the world but if you want to keep your highlands happy it really needs to get to 60-62 range at night. Lower than that even for the less tolerant and the ultrahighlands.

    Tony
    Is that a Nepenthes in your pocket or you just happy to see me?

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