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Ugly leaves on Masd.

This is a discussion on Ugly leaves on Masd. within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; OK, so I told you if I could not grow a Masd. I would paint ...

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  1. #1
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    Default Ugly leaves on Masd.

    OK, so I told you if I could not grow a Masd. I would paint one. Well, I do grow them, with mixed results. One question - I am having problems with the leaves. The biggest problem is a white crud that is on the leaves. I am not sure what is going on. I mist with R.O. water daily. I water whenever needed, with the same R.O. water. Not all are suffering from the white stuff. It almost looks like calcium but I am sure that is not it, well I think not, oh heck - at this point I have no idea. At one point I had leaves with undersides all black, from spider mites - that is one reason I am misting every day. Does anyone have a thought?

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    It could be the bean yellow virus that is mostly found on Pleurothallids, especially Masdevallias. post a photo if you can.

  3. #3
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    I went downstairs to get a picture and when I turned the plant around, I realized that the black/brown spots were on the back of the leaf, big splotches that I have been told are spider mite. I am guessing this is all related. Now to get rid of the spider mites, any great ideas? I have been misting the plants daily to try to make it not a good atmosphere for them.

  4. #4
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    Try neem oil or sunoil and water to battle the spider mites on this orchid. Coat the leaves with a fine mist. If the orchid is not huge, take a q-tip or cotton ball and some rubbing alcohol and physically wipe each leaf top and bottom to remove the mites. Pour some insecticide through the medium. Retreat every seven days for two to three weeks until you no longer see any mites. If you can and have the time, Don, please post a photo so that others reading can see what the damage looks like and can identify it on their own orchids.

    Cheers,
    BD

  5. #5
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    miserable mites suck out the chlorophyll the green pigment in the leaf leaving a white glaze then later it turns dark . my daughter had a problem with them ..

  7. #7
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    Exactly what is happening. Like they turn white and then a bacteria or something moves in. I will get pictures on here, maybe I can get them tonight.

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