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Thread: Nepenthes Seed Sowing

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    BigBella's Avatar
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    Sterilizing the media is a good overall preventative; but no one seems to be addressing the nature of the seed itself.

    Lowland Nepenthes and even some odd highlander seed are notoriously "dirty" in terms of fungal contamination; and one of the easier methods for cleaning them, prior to sowing; or, for use in TC, involves cleaning the seed with peracetic acid or vinoxide (CH3OOOH), which can easily be prepared with household 3% hydrogen peroxide and white vinegar -- acetic acid, typically at 5% acidity. It is prepared in a 4:1 ratio of H2O2 to vinegar. The vinegar is heated to boiling in a microwave and added to room temperature H2O2. It is a powerful oxidizer and antimicrobial, but does not harm the seed.

    They can be soaked for as little as thirty minutes and sown without rinsing.

    My typical compost for seed is a 2:1 mix of milled sphagnum to horticultural sand . . .
    Last edited by BigBella; 05-07-2016 at 11:08 PM.
    “Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo . . ."

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    That advice sounds great, Bella, as does the advcie everyone else has offered! Going to sterilize both my media and seeds, think I'll stick with a LFS based media from experience, and sow them tonight! Hopefully lots of plants to share in a year or 2!

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    Great advice here. I just bought some ultra lowland nepenthes seeds and need the 101 about seed sowing. So here are the questions:

    - do the seeds need stratification?
    - going to try to sterilize them according to to BigBella
    - sow immediately?
    - soil: is is better to use peat based or lfs?
    - seeds stay on top of the soil or buried (if, how deep?)?
    - bag the pot and then wait? My conditions are lowland (heated terrarium)

    Thanks in advance.
    Looking for N. Campanulata hybrids. Also would like to grow some nepenthes from seed. Growlist/pic thread: http://www.terraforums.com/forums/sh...-Pete-s-plants

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    Plant Whisperer Bio's Avatar
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    Quote Originally Posted by pmatil View Post
    Great advice here. I just bought some ultra lowland nepenthes seeds and need the 101 about seed sowing. So here are the questions:

    - do the seeds need stratification?
    - going to try to sterilize them according to to BigBella
    - sow immediately?
    - soil: is is better to use peat based or lfs?
    - seeds stay on top of the soil or buried (if, how deep?)?
    - bag the pot and then wait? My conditions are lowland (heated terrarium)

    Thanks in advance.
    The answers to your questions can vary depending on the method used to germinate the seeds. One of the best things about Nepenthes seeds is that there is no one way to do it, at least for the easier species. What works for one person may not work for someone else. With that being said, here is my advice, based on my method:

    1) They do not need any kind of stratification.
    2) It's not necessary, but it won't hurt them.
    3) Sow them as soon as you get them. ULL Nepenthes seeds have some of the shortest lifespans of all CPs.
    4) I prefer to use a peat based medium to give the seeds as much contact area as possible. [I]Sphagnum/[I] tends to grow and choke out seedlings; even if it is dried out first, spores will grow and overwhelm the seedlings if the LFS is left unsterilized.
    5) Do not bury the seeds! Just sprinkle them on top of the medium. (Be careful. They are very light. Even breathing while handling them isn't a good idea)
    6) After sowing them, bag them up, or place them somewhere very humid. The wait is usually not less than 4-6 weeks, and can be over 6 months, depending on the viability of the seeds.

    Unfortunately, due to the very short lifespan of Nepenthes seeds, you may get a very low germination rate, if any germinate at all.

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    pmatil's Avatar
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    Thanks Bio! Fingers crossed I get at least one to germinate, since it's only "4x fresh viable seeds".
    Looking for N. Campanulata hybrids. Also would like to grow some nepenthes from seed. Growlist/pic thread: http://www.terraforums.com/forums/sh...-Pete-s-plants

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    One thing that should be mentioned about lowland Nepenthes seed is that their viability is generally far shorter than their highland counterparts; and they should be sowed immediately. There seems to be greater selective pressure under those swampier conditions for those species to gain purchase and establish themselves earlier on. Some lowland species have seed viabilities which can be measured only in weeks; while I have had stored highland seed germinate at over a year or more . . .
    “Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo . . ."

    -- Galileo "Biff" Galilei

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    pmatil's Avatar
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    I just sowed (sew?) the seeds. Fingers crossed...
    Looking for N. Campanulata hybrids. Also would like to grow some nepenthes from seed. Growlist/pic thread: http://www.terraforums.com/forums/sh...-Pete-s-plants

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    Trying to keep my frustration controlled right now...

    Rinsed my peat. Rinsed my sand. Microwaved media for 20 min. Soaked seeds in paracetic acid. Put in new contianers/plastic bags.

    2 weeks in, mold in some bags already. I keep messing this up.

    The important question right now though, what do I spray on the affected seeds to kill back the mold?

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