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climbing p-bulbs

This is a discussion on climbing p-bulbs within the General Orchid Culture forums, part of the Orchid Culture category; What does everybody do, especially wondering s/h users, when your orchids stair-step, i.e, the p-bulbs ...

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  1. #1
    Cinderella is offline Senior Member
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    Default climbing p-bulbs

    What does everybody do, especially wondering s/h users, when your orchids stair-step, i.e, the p-bulbs start to grow higher and higher over the media so that the new little roots are suspended and not in contact with the media? Oncidiums seem to do this particularly and I don't want to repot all the time, plus, doing so would really bury the old p-bulbs, which might rot. What is the best solution?

  2. #2
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    LJA is offline OrchidTalk Tech Admin
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    Not sure what people do regarding this with S/H, but with bark mix, I just go ahead and bury the old bulbs. Doing that hasn't hurt the plants at all, and there's almost no way around it if you're going to keep the things from stair-stepping right out of their pots every 8 months. I'm curious too, though, about whether S/H growers have a problem with rot if they bury old PBs under the medium.

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    Basically i bury the PB,s in s/h the same as with bark.I have done this with numerous plants/species without problems.Phragenstein had it,s first growth buried quite deep but a new growth still has managed to come from it.
    I have a Onc Aloha Iwanaga "Dogshima" that has PB,s about 4" in the air , all i do is guide the aerial roots to the medium.Same for Onc flexuosum.
    They are both growing new PB,s so they don,t seem to mind !

  4. #4
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    I bury the PB's as well. Since I grow in the GH most of my climbers are mounted but most of those that climb can be wrapped around the perimeter of the pot as well. Just something you have to deal with.

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    Not sure about the s/h thing, but if a plant isn't ready to be repotted yet and it does what you're saying, sometimes I'll just put a little wad of sphag right beneath the new PB and the roots that are forming. It seems to keep them a bit more moist so they grow faster into the pot. Once they're into the pot you can leave the sphag or take it away.

    Kevin

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    Cinderella is offline Senior Member
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    Sounds good....do you spray or water the sphag?

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    Quote Originally Posted by Cinderella
    Sounds good....do you spray or water the sphag?

    If I think about it. I just think it gives the new, exposed roots a slight edge for growing. I don't use a very big piece of sphag, so it usually dries out pretty fast. It does seem to make them grow faster though.

    Kev

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    I gave up on my Oncids ,they were in pots but not s/h now they are not in anything except for a few old bulbs the rest of the plant just hangs out .one of these days I will lop off the part that is dangling and pot it . They bloom and are happy.... I hate to repot . Gin

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