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Red spider mite on a phal

This is a discussion on Red spider mite on a phal within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Hi - any tips on how to kill red spider mite on a phal ? ...

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  1. #1
    katep is offline Junior Member
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    Default Red spider mite on a phal

    Hi - any tips on how to kill red spider mite on a phal? I'm guessing it's red spider mite as it looks just as described in one of my books. Reddish minute spots and red when wiped with tissue, pitting on leaf with aged/whitish looking areas. Any help appreciated as it's one of my favourite plants.

    While I'm at it - any tips on getting rid of the cottony white flying bugs on my spathoglottis would be appreciated.

  2. #2
    Gin's Avatar
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    Yes it is mites .
    I don't know what you can get in Australia to kill the mites a lot of the sprays that will kill other pest won't kill them they are members of the spider family . I have used Safers insect soap on Phals . to kill them Neem might also work . Washing the leaves helps , they have a short hatch cycle think it is 3 days , what ever you use should be used every 3 days to get the new ones .
    It sounds like the other pest is white fly.. miserable things they multiply fast also like dry conditions . Hope this helps a little

  3. #3
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    I got red spider mites for two winters. I started using neem oil a year ago and got rid of them completely. But I also lost two plants (they were not strong to start with), maybe from neem oil. Some people said oil can damage plants.

    Qing

  4. #4
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    smartie2000 is offline Senior Member
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    I just sprayed all my mom's plants which are mostly phals with pyrethrins. It is supposed to kill mite too, and it basically it messes up the bugs nerves and they die. i was treating the plants cuz of scale

  5. #5
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    orchid-man is offline Not Normal
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    if you are getting red spider mite the humidity is to low.The best way to keep these critters out is a nice humdity in the range of 50-70+ percent.
    So if you have got them ,mist the plants from the underside as they don't like water.

  6. #6
    katep is offline Junior Member
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    Default Humidity question

    OK I'm hoping this question will make sense - when the weather forecast says it will be 36 degrees (celcius) and 80% humidity in the city I live in, is the humidity mentioned the same everywhere? Could it be less humid where I keep my orchids than in other places in the same city or will it be 80% everywhere?

    I've also looked over all my plants and out of the 100+ I only seem to have 4 phals and 2 dendrobiums with the mite - any ideas why it doesn't like the others?

    Kate

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    Hi, humidity varies from place to place depending on air flow how wet it is in the surrounding area and variations of temperatures . When we lived on the river it was a lot higher than it is here, not on a river ..
    Mites love Phals. and Dends. they can attack other plants but seem to prefer those . Hope I am not as clear as mud in my reply . Gin

  8. #8
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    Brutal_Dreamer is offline Dreaming with my eyes open...
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    Quote Originally Posted by katep View Post
    OK I'm hoping this question will make sense - when the weather forecast says it will be 36 degrees (celcius) and 80% humidity in the city I live in, is the humidity mentioned the same everywhere? Could it be less humid where I keep my orchids than in other places in the same city or will it be 80% everywhere?

    I've also looked over all my plants and out of the 100+ I only seem to have 4 phals and 2 dendrobiums with the mite - any ideas why it doesn't like the others?

    Kate
    Having just returned from Queensland, Australia (Cairns), I can tell you that the humidity is plenty high for orchids grown outside. Being the wet season, it rained every day about once an hour for about ten minutes or so and then the sun would dry everything off. It was amazing. I am not sure how far from Cairns you are, but on the coast there it was very humid.

    Since you grown in a greenhouse, Kate, and your greenhouse pulls air in from outside, then the humidity during this time of the year (autumn) should be high enough. Hope this helps!

    Cheers,
    BD

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