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  #11  
Old 06-15-2021, 12:19 PM
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Leafmite Leafmite is offline
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Zygo issue
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Someone in my orchid society swears by the original formula of Listerine to prevent the spots on Oncidiums/Zygos. He puts it in a spray bottle and sprays the leaves every week.
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  #12  
Old 06-15-2021, 01:09 PM
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You can read something about Zygopetalum growing and how to avoid leaf spots here:
Alan Koch, Gold Country Orchids, DVOS 2017 02 16
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  #13  
Old 06-16-2021, 07:14 AM
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I tried the Listerine route for years, with no visible results. I've also heard of a grower using Windex. Neem oil worked well for me. Some plants seem more susceptible than others.
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  #14  
Old 06-16-2021, 01:47 PM
Shadeflower Shadeflower is offline
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I read that listerine was too strong to put on leaves. At least that was for tomatoes. I'm sure I burnt some leaves when I used listerine without checking how to use it properly.
As a sidenote though one of my zygo's has developed a black patch on a leaf too now, that's karma right, me saying they shouldn't and then one decides to prove me wrong
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  #15  
Old 06-16-2021, 02:23 PM
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Listerine is alcohol with coloring and flavoring. The percentage is listed on the label.
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