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Thread: Windowsill growing questions in Colorado

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    Windowsill growing questions in Colorado

    Hi, everyone. Longtime reader, first time poster. I have 4 nepenthes that I am growing on a windowsill in Denver. As those of you in the area know, this means low humidity and very strong sun. I know the best solution to all of my questions is probably to put them in a terrarium with lights, but I'd really like to try to make them work as houseplants. Dang it, if Elgecko can do it, so can I. Eventually I will get a whole house humidifier eventually, but for now, not so much. Right now the weather service says the humidity is 36%. On to the questions:

    Background: these plants were originally in a smaller west-facing window, then I moved them to an east facing window in the winter hoping they would get more light. About a month ago I moved them to a large west-facing window again, where they get about 4 hours of direct morning sun, which is still fairly strong in Denver, and bright indirect light the rest of the day. I water them about every other day, enough so that the saucers get some water in them. The soil is long-fibered sphagnum, a little peat, perlite, and some orchid bark. The temperature is about 70 daytime and about 60-65 at night.

    The first plant for your viewing pleasure is a ventricosa that I got from california carnivores winter/spring 2007. It has grown some, but the pitchers have never gotten as big as I would like, and it has started to look a bit like a palm tree, although the leaves have stopped falling off so fast since I moved to CO from OR last summer.

    Windowsill growing questions in Colorado

    Windowsill growing questions in Colorado

    The next three were all purchased this last winter from *************. The original leaf size is visible in the pics, about 3 inches across. The leaves are all growing well, but pitchering on all but the sanguinea is less than ideal. The first pics are the sanguinea, which seems to be doing well, but there is a new pitcher forming that is not upright, but parallel to the ground (first picture).

    Windowsill growing questions in Colorado
    Windowsill growing questions in Colorado

    The rafflensia is doing alright, pitchering sporadically, and sometimes the pitchers stop mid-growth. The latest leaf is also a much lighter color, which may be from the direct sun these plants are now getting.

    Windowsill growing questions in Colorado

    The 'judith finn' is growing huge leaves (comparatively), but will NOT pitcher. It seems to want to start sometimes, but they never do much, and seem like they might be getting burnt or aren't getting enough humidity.

    Windowsill growing questions in Colorado

    I hope the pictures turn out okay, and I appreciate all help/suggestions. Thanks in advance!

    adrian

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    N=R* fs fp ne fl fi fc L Pyro's Avatar
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    What exact help are you looking for? To my eye they seem to be doing just fine.

    Getting plants to make GIANT pitchers is more a matter of time than anything else. EG has been growing that hamata in his window for 3 or 4 years now. Just give them time and keep doing what you are doing.
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    rattler's Avatar
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    alot of the pitcher development issues could be humidity related...some species need constant humidity for good pitcher production.....i know for a fact ventricosa is not one of them, ive pitchered it in 15% relitive humidity.....threw out a couple mutant looking pitchers during the adjustment period but after that pitcher production was normal.....

    or could be fertilizer....are you fertilizing them at all? some of us use fertilizer to a certian extent but over use can result in stunted or no pitchers because the plant doesnt have to produce them to get the nutrients they need.....

    while i have not grown it ive heard Judith Finn is a bugger to get to pitcher reliably even in ideal conditions....it often throws out leaves that do not produce pitchers....

    and as Pyro says, could just be a time factor aswell...........
    cervid serial killer
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    Learning How To Multiply Indigo's Avatar
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    cool those 4 r my first nepenthes, i only have trouble with 'judith finn' in low humidty area, this plant just don't produce pitch in low humidity, now i m pretty much got tired of this plant, other will do fine, just try the humidity tray,

    edit: avoid the sunlight that shine through the window glass, its extremely hot for the plants.

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    rattler's Avatar
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    Quote Originally Posted by Indigo View Post

    edit: avoid the sunlight that shine through the window glass, its extremely hot for the plants.
    uh.....no its not....it will cause issues with plants in terrariums sitting in a sunny window but sitting on a window sill they are fine...once the light penetrates a single pane of glass its strength is significantly lower than if the plant was on the other side of the pane of glass.......put the light through modern double pane, energy efficient windows and growing a plant in a full sun south window is about like growing it in bright shade outside.....take a plant thats been growing in a sunny south window and place it in the full sun outside and it will sunburn due to the increase in light, could very well kill it due to the sudden change depending on plant species.....

    the issue with closed terrariums in a sunny window is that the suns rays will raise the temperature inside the terrarium, the light itself isnt the problem........
    cervid serial killer
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    Learning How To Multiply Indigo's Avatar
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    re: rattler mt

    lol ya a sealed terriaum in direct sun is a microwave. but still 'judith finn' has very sensitive tendril can cooked easily

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    I've been doing a bit of fertilizing with crushed pond fish pellets - lots of protein. I'm just wondering if the plants and pitchers are the right size for their age (2 years since purchased for the ventricosa and 1 year for the others), and how to get them all to pitcher more reliably. Maybe I'll try to keep the Judith Finn out of direct sun for now.

    How much and how direct is the sun that most people give their windowsill nepenthes?

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    one, dont listen to him, at northern latitudes there isnt going to be strong enough light coming through that window to fry anything with neps that are not under glass other than the couple that are shade lovers....Judith Finn is just an inconsistant pitcherer......

    two, feeding it like that isnt fertilizing, i meant foliar and root ffertilizing so if thats all your doing that thats not the cause.....

    three, the vents pitchers are fine for one growing in a drier environment....ive got a smaller one with bigger pitchers but its not the same clone as yours so the difference between them could be genetics or could be environmental......

    four, for the most part, unless yah ive in certain areas of the US, window sill growing of neps is going to mean you have them in a harsher environment than those growing in most greenhouses and terrariums so its not fair to compare one grown one way to one grown the other.....your plants are healthy and look very good.....just enjoy them and let them do their thing.....
    cervid serial killer
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    I didn't get stimulated but he kept his promise on change, that's about all I got left!
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