So, about a week ago I posted about my ligustrum tree having powdery mildew. I have followed the milk spray treatment since then. Whilst the tree appears healthier and therr id no mildew left on the branches, I am now confused as to what is on the leaves. Is this mildew, oe stains from the milk treatment? It mostly comes off if you rub the leaf. If it is mildew, is the milk treatment not working because I have been spraying it at night when it is dark?
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