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Potting Ocidium, Vanda

This is a discussion on Potting Ocidium, Vanda within the New Growers: Ask the Senior Members forums, part of the New Growers category; Hi, I had been on a trip to Kodai Kanal, India - its a hill ...

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  1. #1
    Kailash is offline Junior Member
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    Question Potting Ocidium, Vanda

    Hi,
    I had been on a trip to Kodai Kanal, India - its a hill station. I managed to acquire quite a few Oncidium pseudobulbs from there. I have potted them in clay pots with the medium from below upwards - sphagnum moss, coarse pertile, coal, coco husk, some red mud, sphagnum moss. The roots of the pseudobulbs extend from the upper sphagnum moss layer to upto just above the coal. I was just wondering if this was fine and if it would allow my orchids to bloom.
    I used a similar potting mixture for 3 Vandas I found deserted in bad state on the roads in Kodai Kanal. Is this also sufficient or is there something else I must use?
    Hoping for your guidance.
    Thanks.

  2. #2
    delphiguy's Avatar
    delphiguy is offline Senior Member
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    personally, i would just use coal or coco husks as potting medium for any orchids. I find
    that spagnum moss stays wet for too long and the roots gets rotted... but thats me
    because i water every day. Maybe you can get away with spagnum moss if you just water
    1x a week or so. As for Vanda I love to just hang them bare root, provided that they get
    enough humidity, if not, potting them up would be a good idea. I bet somebody more
    experienced will be able to give you better advice.

  3. #3
    Kailash is offline Junior Member
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    Thanks a lot for your quick reply. I do plan on watering my orchids only once in 3-4 days - so I guess the sphagnum is good. But don't worry, it makes up hardly 10-15% of the total mix.
    For my Vanda's, this is only temporary till I can get myself a proper place and pot to hang them in.
    Thanks a lot for your reply. Looking forward for more advice.

  4. #4
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    Orchidzrule is offline Senior Member
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    Some sphag in your mix is a great water retainer, but if you water every 3 or 4 days, water retention probably isn't too important--unless you have really hot & dry conditions.

    Cheers,
    Rob

  5. #5
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    dudleyleroux is offline Senior Member
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    3 - 4 days with spagnum would destroy most orchids where I live. It's every 10 - 12 days with spagnum here. I usually repot into coconut husk and water once per week.

  6. #6
    Kailash is offline Junior Member
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    The weather here isn't that hot but it isn't as humid. The moss dries in about 2-3 days itself - thats why I said once in 3-4 days - will vary it depending on how wet the moss remains.
    Thanks for the replies.

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