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Tony from Sykesville, Md writes

Do I need to make more than one application of Bonide Liquid Copper Fungicide Concentrate for rust on apple trees?

I've sprayed one application on my apple trees, but 2 days later see the rust spreading


For rust on apples, you will need to make multiple applications of Bonide Liquid Copper Fungicide Concentrate. Repeat applications are needed every 7-10 days during the bloom and growing seasons. 

Answer last updated on: 05/03/2021

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