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Paph roots not growing well

This is a discussion on Paph roots not growing well within the General Orchid Culture forums, part of the Orchid Culture category; So, I've got a mixture of phals, oncidiums, and paphs. The problem is that my ...

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  1. #1
    Laura81 is offline Orchid Wrangler
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    Post Paph roots not growing well

    So, I've got a mixture of phals, oncidiums, and paphs. The problem is that my paphs seem to have trouble growing new roots while my other orchids put out roots easily. The existing roots are OK for the most part. I have one maudiae type paph and one multifloral (Oberhausen's Diament) paph.

    The paphs will start roots, but they rarely seem to grow to any length. They just end up as little nubs. I have them on a humidity tray on a windowsill. They do get sun in the afternoon, which I'm wondering if this could be damaging or drying to new roots. The leaves are fine, not sunburned. Should I put a layer of spaghnum on top of the media when I see new roots emerging? Does misting them help? They are potted in a mixture of bark, spaghnum, and small lava rock.

  2. #2
    orchidlady's Avatar
    orchidlady is offline Senior Member
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    Paphs are more terrestrial in their growth habits and because of this their roots don't have the thick layer of velamen that many of the epiphytes do. The roots will dry out and stop growing when exposed to air. The solution is to repot the plant a little deeper. In a pinch, adding some additional medium or sphagnum helps.

    Susan

  3. #3
    cakedaddy's Avatar
    cakedaddy is offline Senior Member
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    Quote Originally Posted by orchidlady View Post
    Paphs are more terrestrial in their growth habits and because of this their roots don't have the thick layer of velamen that many of the epiphytes do. The roots will dry out and stop growing when exposed to air. The solution is to repot the plant a little deeper. In a pinch, adding some additional medium or sphagnum helps.

    Susan

    Good advice....I have just started growing paphs myself and they are doing well. I have four maudiae types and all are putting on new roots and top growth. Keep in mind that they will be able to take more water than other orchids but water QUALITY can be an issue with these. If your water already contains lots of mineral salts, go really easy on the ferts. And just because they CAN take more water, doesn't make it a hard and fast rule...it really depends on the type of water. I find that a temporary "drying" is ok as long as you are certain that there is no build-up of salts in the medium.

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