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My hydrangeas were looking beautiful until a few weeks ago. Then I started noticing that some of their leaves had these gray powdery looing spots on them, their blooms started having brown spots and their new leaves have some yellow ones. I searched online and I think it's powdery mildew, but I don't know if that is the problem for all of them because some don't have that powdery texture on their leaves. How should I treat them? enter image description hereenter image description hereenter image description hereenter image description hereenter image description hereenter image description hereenter image description hereenter image description here

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    Your hydrangeas appear to be in pots. Are these pots plastic by any chance, and do they have crocks (pieces of pottery or stones, for example) in the base of the pots? Also, have you inspected the base of the pots (and rootballs, if possible) for any sign of pests or rot? Outside of the above have you been using any chemicals on them (food, mildew treatment, mineral supplements, etc.)? Has the weather been especially hot or wet, and have your checked to see whether you might be overwatering them? – idvpPtk9G7Y2Tei6 Oct 15 '19 at 11:33

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