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What has colonized my B. nodosa roots???

This is a discussion on What has colonized my B. nodosa roots??? within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Spent some xmas money on new orchids and got my shipment today. I ordered from ...

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  1. #1
    poetiscariot's Avatar
    poetiscariot is offline By virtue of the absurd
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    Default What has colonized my B. nodosa roots???

    Spent some xmas money on new orchids and got my shipment today. I ordered from a grower from whom I've ordered before, and everything looked great. . . except the little B. nodosa I tossed in because you can never have enough of those. It looked more or less ok at first glance, though since it's got roots going way off to the side there, I wondered if it needed a repot:



    But when I lifted it a bit to see what was going on down there, I found a whole world of little plants (maybe?), nasty brown spiderwebby stuff, and general this-looks-badness:



    Roots aren't tightly bonded to (what's left of the) medium at all and though they're green down there, they're also pretty wrinkled and might be dead but covered with algae. I've not seen this before. I didn't pull the rest the plants I got in this order all the way out, but I rooted through their pots a little and things look fine. What's going on, and what do I need to do?

    Yikes,


    Victoria

  2. #2
    Cjcorner's Avatar
    Cjcorner is offline Senior Member
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    First I would soak the root mass in something with a bug killer, & fungicide; i'd add in a few drops of liquid fertilizer and maybe a drop of superthive. Then i'd repot. Better safe than sorry!

  3. #3
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    Brutal_Dreamer is offline Dreaming with my eyes open...
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    Yes, just was the roots, removing any that are no longer viable. Then repot. I have recieved much worse from online vendors. It is always a gamble, but if you always repot when you get a new orchid, most of the time everything will be alright.

    Cheers,
    BD

  4. #4
    poetiscariot's Avatar
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    Thanks for the words of support! When I got into washing the beastie and repotting it, it looked like all the junk on the roots was algae that had died and turned brown, with some bright green algae still growing on the lower parts of some of the leaves and those tiny leaflets near the top of the medium. I very occasionally get a little moss on mine, but have never had a real algae attack, I imagine because I grow in my living room and not a greenhouse. Anyway, some of the roots were goners and some fell off as I was just handling the plant in the sink -- but overall I think it'll be fine. Sprayed it with physan solution before I potted it up, etc. I'll be curious to see how the roots that were in the center of the mix and still fat and firm do; they were covered with what I now think was dead algae, but they felt fine so I left them there after washing them. Wish us luck! And thanks again for being a virtual home for orchid-related nervousness.

  5. #5
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    Unhappy

    The Florida weather has warmed up enough that I decided to repot a Stanhopia Jenishiana, that I recieved in December. I was dismayed to find the medium was completely deteriorated, and soaking wet,(although I haven't watered in 10 to 14 days). The pot was crawling with bugs, and white eggs. I soaked in Physon solution, and placed in a 4" basket with medium sized bark mix. Any other suggestions ???

  6. #6
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    No, what you did sounds just right. I would spray the mulch with some insecticidal soap or insect control once a week for about 3 weeks to prevent any bug relapses though. You can never be too sure...

  7. #7
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    Talking

    Navyderek: That was fast, thanks. I will spray with the physon solution for a few weeks.

  8. #8
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    wetfeet101b is offline It's not dead! It's just permanently dormant.
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    It looks like a combination of moss and mold.
    Rinsing the roots would be a good start.
    Replacing the bark would be the next step.

    Also, when roots outside the pot are bigger than the roots inside the pot, the plant is telling you that it is time to get a bigger pot

  9. #9
    geoblue is offline Junior Member
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    Physan is a disenfectant, not an insecticide..... Use Neem oil, or you can use a mix of 409 and isopropyl alcohol with water..... We were taught to use 2 parts 409 ( regular strength) ; 2 part rubbing alcohol; 4 parts water..... THis is good for treating scale and other nasty things. If you had white egg cases it sounds like ants.... You can use any regular insecticide on them or a systemic insecticide. they are available at any supply store or big box..... liquid stuff may be easiest to apply.
    OH one relaly useful thing my favorate old time grower taught us was to add dog flea shampoo to your fertilizer mixes..... it acts a s a surfactant (spreader/ sticker, makes the fertilizer stick better to roots) and the pyrethrins in it drive off the ants /discourages other critters.

  10. #10
    poetiscariot's Avatar
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    That's a great tip about the dog shampoo! Filing that away for sure.

    I never saw any ants or bugs of any sort, actually, and I *think* the white bits may have been small pieces of perlite that got worked into the mesh, which I believe was (dead) algae. The plant is doing fine now, anyway, and nothing seems to have spread to the rest. It was quite a thing to see when I first got it out, though.

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