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Bryan from Wa writes

What is the application rate for Southern AG Liquid Copper Fungicide for a non-fruiting plum tree?

Have a tall ornamental plum tree (no fruit). It's just got blossoms on it now. When it grows, the leaves get holes all over them. Consequently, parts of the tree do not now have blossoms. Your label says 9 gallons for a tree my size but it doesn't give me the mix ratio other than 1-6 tsp. Not sure how to mix the solution. Can you please let me know?


Southern AG Liquid Copper Fungicide is not labeled for application to plum trees so we cannot recommend it for this use.  The first thing you would need to do is to get the problem identified.  Holes in leaves could be caused by an insect, not a fungus and a fungicide would not affect insects.   It would be a good idea to contact your local cooperative extension office and ask to speak to the master gardener on staff, or you can contact your local department of agriculture to seek advice. These professionals may ask for pictures of your trees, samples of the foliage, or they may come to your property to inspect the trees

Answer last updated on: 04/01/2019

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