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moss grows on top of medium

This is a discussion on moss grows on top of medium within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Why do some orchids seem to grow moss on top of the medium? I imagine ...

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  1. #1
    Cinderella is offline Senior Member
    Join Date
    Jun 2004
    Louisville, KY

    Default moss grows on top of medium

    Why do some orchids seem to grow moss on top of the medium? I imagine that left untreated this would choke the roots. Does it mean that you need to repot? Or, is it harmless?

  2. #2
    Diane's Avatar
    Diane is offline Can't Re-Member
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    Catts and Paphs
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    Jun 2005
    Surprise, AZ
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    Moss usually means one of two things to me - the media has broken down so much that moss is thriving and it's time to repot - or I'm keeping it too wet. In my case, since I grow mostly Catts, I don't often have that problem. But I've had a couple neglected Phals start moss.

    Sometimes the spore comes in the potting media - if it wasn't well cleaned.

  3. #3
    mde's Avatar
    mde is offline Senior Member
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    Feb 2005


    I personally don't think it hurts a thing and I also find it attractive. I have a few bonsai and I purposely grow spores (kyoto japanese moss) in these for the effect.
    Other opinions are sure to follow.

  4. #4
    bench72's Avatar
    bench72 is offline Moderator
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    Jan 2005
    Sydney, Australia
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    I've got a paph philippinense which has the whole potful covered in moss... and I think it must be happy because there is one mature growth, one almost mature and five new growths on it...

    however, I have read somewhere else that with Phalaenopsis it is not good as it cloggs up the air movement or something...

    frankly, unless the plant is looking terrible, I keep it and it does look nice as it makes it even greener...

    so I'm obviously a newbie grower so read all the above with a grain of salt.


  5. #5
    ATester's Avatar
    ATester is offline Minster of Silly Flasking
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    May 2005
    Rollinsford, NH

    Default Moss

    You seem to be doing nonpurposfully what I am trying to do! What is your secret!! I have a couple mounts, and though the sphag is great at being water retentive, it doesn't have the nice loush green I would like to have growing...the plant, Mtssa. "Izumi" is doing great, but I hope that moss also starts growing.

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