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powerdy mildew

  1. spleef farmer

    Powdery Mildew

    Ihave powdery mildew starting on a couple of plants. I have treated them earlier with Potassium Bicarbonate. Worked good but 3 weeks later came back. Since then I have increased ventilation and treated again by brushing the leaves with it. ( Too much work). My question is..... will it hurt me...
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