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Thread: Nepenthes sitting in water

  1. #9
    N=R* fs fp ne fl fi fc L Pyro's Avatar
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    All the Neps that I grow here at the lab sit in trays. I water about once a week (every Friday) and the water collects in the trays and hangs around until about Tuesday. None have had any issue with this. And during winter all the Neps that I keep outside during the summer get the same treatment when I move them inside.
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  2. #10
    Moderator Cindy's Avatar
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    I think that as long as your ambient humidity is not extremely high, it should be alright for neps to sit in trays. For me, it's only fine during the hotter months when the RH is about 60%. During the rainy season, the RH can be 80-90% for weeks. If transpiration rate is higher, the roots take up water faster. In that manner, the roots do not rot. On the other hand, if the leaves are losing very little water and the roots do not draw it up quickly, rot sets in.

    Temperature plays a part too. The lower it is, the lesser the chance of rot.
    Cindy

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    jorick's Avatar
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    You can also put your plant on an upside down pot, so that the pot with your plant in it doesn't sit in the water. That's how I keep my Neps.

  4. #12
    Let's positive thinking! seedjar's Avatar
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    Good to know about raff and bical... I'll have to try that the next time I rearrange my lowlanders.
    If you're using trays, a little gravel in the bottom might help those species that like it drier. Also, I've been recently experimenting with net pots in trays, and so far I've had good results. If you can get some air circulating through the pots while they're wet, your plants will probably appreciate it. Media probably plays a factor too - something rich in solid aerators like perlite, pumice or rockwool could easily sit in water and continuously take it up without becoming so waterlogged as to not allow air in. I haven't tried anything to that end yet, as I usually just repot with whatever is handy. However, I have read that Neps do extremely well with rockwool gravel, so long as you're careful while repotting them (rockwool's solid, porous nature and Nep's brittle root structure make it a sensitive ordeal.) I bet most Neps in rockwool would be quite happy on the shallow tray method. You might have to water more, though, as rockwool wicks and evaporates water at an impressive speed.
    On the other hand, I should mentioned that I haven't found it strictly necessary to keep Neps constantly wet. When I first got started, I had my terrarium on a high rack where I never wanted to take it down for watering. So I just didn't water it. I would mist the plants one to three times a day and occasionally dump a little (read: tiny) amount of water on the pots I could get to, but the soil would essentially be dry/houseplant-moist for a week to almost a month at a time. I think my plants probably grew a little more slowly as a result, but they never refused to pitcher, and seem to have developed very hardy root systems as a result. Misting and constant, moderately high humidity is probably key to this method - I make sure to always have some standing water at the bottom of my terraria (pots are kept on racks above the water line) and keep a fairly snug lid, with just two small openings to create a little air circulation.
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  5. #13
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    All my lowlanders are watered about once a week but are sprayed daily. I have a bical which I've let dry out a bit once (accident) and it didn't do anything in terms of wilting or pitcher blackening. I plant them all in baskets and let the water drain freely. Haven't lost a plant so far to this method.

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    Outsiders71's Avatar
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    Like Joe said it depends on your media. If you're using a media this is airy such as 50/50 lfs/perlite then it is ok to let them sit in water. I water my Neps like you described, I fill the water dish and then let it evaporate and then fill it again. Haven't killed anything yet but then again I don't have anything on the exotic side.
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    chloroplast's Avatar
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    Hi Mitch,

    Quote Originally Posted by [b
    Quote[/b] ]When I water my Neps I usually top water till the tray beneath pools with water.
    This is how I water my neps. I wait just until I see water coming out of the bottom of the pot, then stop. I keep the water there (usually 1-2 mm) until it evaporates.

    The key to growing happy neps while avoiding rot (at least for me) is keeping the medium constantly moist but not sopping wet. That said, my ampullaria and bicalcarata don't mind sitting in water so you'll find variation within the genus.

    I think temperature, pot size, and potting medium are important modifying parameters. Generally, I'm more careful to avoid overly wet conditions when the temperature is cooler, when the pots are bigger, and if the potting medium is dense. FYI....I use new zealand LFS or live LFS to grow most of my neps, with some orchid bark mix thrown in pots bigger than 6" diameter.

    Hope this helps clear some of the mystery.

    Ken
    Secretary, New England Carnivorous Plant Society (NECPS) http://www.necps.org/
    Member, International Carnivorous Plant Society (ICPS)
    Member, North American Sarracenia Conservancy (NASC)
    Member, The Carnivorous Plant Society (CPS)

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    and just to be a little different...
    i have all my neps in those 4" deep water trays. i water them every other week. the larger neps get filled to the top of the water tray while the 2 smaller ones only get filled half way. basically, i give them enough water so that it all evaporates in 1.5-2 weeks. they have been growing this way for about a year and a half now with no issues.

    growing conditions are:
    95% sealed terrarium
    4-4' flourescent lights (cool white and daylight bulbs)
    1-2 large computer fans for circulation
    humidity varies between 70-95% measured 6" down from the top

    peace,
    tech...
    Power corrupts. Absolute power corrupts absolutely.
    Some days you're the pigeon, some days you're the statue.

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