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Brown Scale on my Phals

This is a discussion on Brown Scale on my Phals within the Phalaenopsis ('moth orchid') Information forums, part of the Frequently Asked Questions category; Originally Posted by paphioboy I have never had scales on phals, they always go for ...

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  1. #11
    kiwiorchids's Avatar
    kiwiorchids is offline Plant Nut
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    Jordan Healey
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    Quote Originally Posted by paphioboy View Post
    I have never had scales on phals, they always go for orchid with thinner leaves like paphs, coelogynes etc. Neem oil + a little detergent solution is effective against scales and non-toxic to humans. A couple of repeat sprays are necessary to eliminate them.

    I would be very hesitant using Neem, there is a certain compound in it which CAN (not will, there is a 50/50 chance...) react with certain media and salts. And it looks VERY unsightly too. I use Confidor aerosol (nope, no CFCs in it either! ) which treats thrips, mites, scale, mealy, aphids and certain bacterias too.

  2. #12
    paphioboy is offline Senior Member
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    Li
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    Quote Originally Posted by kiwiorchids View Post
    I would be very hesitant using Neem, there is a certain compound in it which CAN (not will, there is a 50/50 chance...) react with certain media and salts. And it looks VERY unsightly too. I use Confidor aerosol (nope, no CFCs in it either! ) which treats thrips, mites, scale, mealy, aphids and certain bacterias too.
    That's odd. I'm not sure what kind of leaf marks you're referring to. I love using neem. After spraying the leaves look so shiny and glossy! My recipe is to fill half a 500ml spray bottle with water, add just enough concentrated neem oil to form an even layer, add a couple squirts of handwash/dishwashing detergent and top with more water. The only thing I do not like about it is the peculiar 'oily' smell, which can be strong.

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