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Thread: Does potting mix actually matter?

  1. #9
    Nepenthes Specialist nepenthes gracilis's Avatar
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    As long as your Nepenthes soil mix is aerated it should be happy, and of course nutrient deficent and somewhat acidic. So a mix of LFS and perlite would be great if it were a bit more acidic, so some folks in almost any CP mix must use a handful of peat moss to compensate. But of course, after time peat mosses acidity gets drained and you must repot, as is the case will any plant.

  2. #10
    BANNED
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    charcoal should increase the ph.

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    I have all my Neps in a "deluxe style" mix except for N. burbidgea x edwardsiana which is in live LFS. All the neps seem to do well.

    The mix I use is approximately equal amounts of:

    LFS
    Peat/Sand mix
    Perlite
    Vermiculite
    Smashed Lava rock
    Horticultural Charcoal
    Orchid Bark

    For N. villosa, I also added smashed granite chips as recommended by Phil Faulisi.

    I have a N. (maxima x fusca) x (spatulata x spectabilis) grown in this mix - now the plant has 10 inch pitchers and it was just a seed in January 2002. It's more likely the robustness of the hybrid than the mix, I imagine. I brought it to the recent NECPS meeting and I will link a photo here once Nathan updates the NECPS site.

  4. #12

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    Quote Originally Posted by [b
    Quote[/b] (lol @ May 16 2005,11:13)]charcoal should increase the ph.
    Sorry, I think you got it mixed up there.
    Peat 1, acidifies water and 2, softens it. Tanic acid.
    charcoal 1, does not affect hardness of water 2, MaY to certain extend bring pH to neutral, in any case, does not do much harm.

    Yes I agree soill mix should include peat for that type of environment. but 1 thing i'm not too sure about, is peat slightly too nuitritious a media as it consist of decayed plant matter doesnt it?
    Also, for those who use 50% - 100% LFS, do you have problems with root rot or when the LFS decays. or do you use basket like containers with more aeration. I tend to use smaller %tage of LFS because My media tends to get slightly soggy...

  5. #13

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    As one of the people who uses a lot of LFS, I've never had problems with root rot or the Sphag breaking down. I've heard of people having problems with Sphag going slimy, but I suspect that this happens either because of poor drainage or the water used not being as pure as it might be.
    Although peat will acidify water, it can't soften it.
    Also, I'm not not sure what the benefit of using granite chips in addition to lava chips is, as they're essentially the same substance. Lava rock is just molten granite that's been cooled quickly.
    And finally, a question for those who use complicated mixes, do you find that the ingredients separate out, with the sand/lava/granite sinking and the perlite/vermiculite coming to the surface?

  6. #14

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    WildBill soon as I have enough money I should try using your mix. Some of those ingredants are expensive (because you have to buy so much.

  7. #15

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    I have some growing in pure LFS, and some growing in a 1:1 ratio of Orchid Mix (a mixture of bark, pebbles, and charcoal) and LFS.

    Any nutrient-poor mix with excellent drainage seems to be fine.
    My Grow List

    "We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special." -- Stephen Hawking

  8. #16

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    Here ya go, Wild Bill:

    N.(maximaxfusca)x(spatulataxspectabilis)



    And there


    Although i don't doubt that you can grow a Nepenthes that large from seed in less than three years, Bill, i personally think you lost a year or something. First sign of senility is forgetting a year of your Nep's life. [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_n_32.gif[/img]
    There's no 'a' in perlite.

    My Growlist
    NECPS.org - New England CP growers unite!

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