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Thread: N. lowii 'G. Mulu' - Blackening

  1. #1

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    Hi everyone.

    I'm having some trouble with my N. lowii.

    I got the plant about a month ago and this is what it looked like after being potted up in LFS:

    N. Lowii

    The plant is now having it's leaves turn black and die form the base leaves up. I have also seen little growth, though I don't think this is unexpected given the timeframe.

    I don't have a picture just yet but will get one to post tonight.

    It's in my glasshouse with temps ranging from 15 degrees C at night to about 30 degrees C day (sorry for the "degrees C"), humidity does not drop below 70% and it's getting bright but no direct sunlight.

    I've searched through all the posts I could find on similar topics but wanted to see if there were any thoughts?

    The only idea that I could come up with was the LFS being too wet (this batch seems to be quite soggy compared to my other batches of LFS). I've been watering it every day and it IS quite damp. I also read one reference that suggested that N. lowii likes a slightly drier substrate than most Neps.

    All of my other Neps (mostly highland/Intermediate and a few lowland) are doing great.

    So... over watering & too wet? SHould I re-pot inot a better batch of LFS (i.e drier and more airy)?

    Thanks.

    Aaron.

  2. #2

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    Hey, i had a similar problem when i had gotten a baby ventrosica, i had a mini terrarium for i but i soon found it dying as well, the leaves turned black from the stem outward

    i tried to save it but no luck

    i am 95% sure that it was because it was water logged, i think that what hapened with me is what is going on with you, i would reduce watering to maybe 2-3 times a week, it depends where you keep it,

    im pretty sure its because of watering too much, repoting it wont do anything i dont think, just cease to water and the LFS will become drier with time until you re water again, itll make it moist but not water logged

    good luck
    Expression = Maneuverability x Coiffure squared

  3. #3
    Nepenthes Specialist nepenthes gracilis's Avatar
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    Hey Aaron, I think its also too wet. N. lowii is more of an "epiphytic" Nepenthes than all the rest of the species. I suggest letting it dry out quite a bit and increase airflow a bit.

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    Capslock's Avatar
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    If you re-pot it, I'd use a mixture that helped air out the soil. I use orchid bark, coir chips, charcoal, and pumice in all my mixtures, in various amounts. I like to use half lfs and half other stuff.

    Capslock
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    My photos are copyright-free and public domain

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    Thanks Stef and Nep (and Schloaty for the PM).

    The LFS in this pot has actually gone a bit slimy (indicating poor quality and waterlogged). Although Stef suggested against it would there not be some benefit in re-potting with as little disturbance of the roots as possible into a better LFS?

    Is the blackening a fungus caused by the moisture, or is it simply the result of the moisture?

    Thanks,

    Aaron.

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    Sorry Caps. You were too quick with the post (or I was too slow).

    A mix of 50/50 LFS/orchid bark sound OK to try?

    Aaron.

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    Capslock's Avatar
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    Sounds perfect, Aaron. I'd soak the orchid bark for a few hours and rinse before using. That seems like a good mix, and yes, the slimy lfs is from being waterlogged. Even the best lfs can get this way.

    Capslock
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    My photos are copyright-free and public domain

  8. #8
    Tony Paroubek's Avatar
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    Quote Originally Posted by [b
    Quote[/b] (AaronJ @ Mar. 22 2004,17:57)]A mix of 50/50 LFS/orchid bark sound OK to try?

    Aaron.
    I would include something inorganic that will keep the mix open and airy.. Pumice, Horticultural perlite, charcoal or something.

    Btw I converted the temps for us American folks

    night 15 = 59/60 and day 30 = 85
    While not horrible it is a bit on the warm side.
    Tony
    Is that a Nepenthes in your pocket or you just happy to see me?

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