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mealy bug invasion

This is a discussion on mealy bug invasion within the General Orchid Culture forums, part of the Orchid Culture category; I am still using up that bottle of Neem I bought long ago (I grow ...

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  1. #11
    Jmoney's Avatar
    Jmoney is offline Senior Member
    My Grow Area
    Favorite Orchid(s)
    paphs, phrags, catts, vandas
    Join Date
    May 2004
    West Hartford, CT
    Member's Country Flag


    I am still using up that bottle of Neem I bought long ago (I grow on windowsills and can't use anything heavy duty). I don't think it does much except shine the leaves and discourage nasties from eating them (i.e. I am not convinced it does much to actually kill bugs). But if you have a small collection that you can stay on top of, a periodic application of some oil-based spray (once a week for at least 3 weeks) will usually work if you also pick off the buggers every couple days or so. I like to wipe all leaf and bulb surfaces with a cotton puff soaked in rubbing alcohol. I squeeze the cotton puff into the leaf axils and other nooks/crannies to let the alcohol do its work. In very serious infestations, the buggers will have eggs in the media, and repotting will be necessary. After a few weeks, most light infestations will be completely cured.

  2. #12
    Invinciblegirl is offline Junior Member
    Join Date
    May 2004


    I had mealy bugs on my paph and on my dor. pulcherrima, and I just tried to systematically Listerine them every chance I got.

    I haven't seen them back, but I'm keeping a careful eye out. And plus, now my orchids smell minty.

  3. #13
    Cinderella is offline Senior Member
    Join Date
    Jun 2004
    Louisville, KY


    I tried rubbing alcohol using a q-tip several times. Then I went for the big guns and used Malathion (mixed and sprayed outside). That didn't even work. My last resort was Safer's Soap which after several applications did the trick. I isolated the plant for a long time. Good luck!

  4. #14
    My Grow Area
    On a Windowsill.
    Join Date
    Mar 2008
    NW Ontario Canada
    Member's Country Flag


    I had my orchids for years as well and the little buggers seemd to form from thin air. No new plants or new soil, just poof and there they were. I,ve lost 3 orchids already and the rest arn't fairing to well either. I hope the cooler weather this winter on the window sill will rid these for next year.

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