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FAQ #28193

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I have garden phlox that gets yellow and mottled leaves every year. It affects it enough to reduce the blooms. Could this be lack of water or perhaps a disease or deficiency? I live in Minnesota.

Related resource areas: Gardens, Lawns & Landscapes

Your phlox could be showing signs of powdery mildew, aster yellows, or spider mites. It is impossible to tell from your description. You should contact your local Extension office and inquire about their plant diagnositic services.

Here is a link to the University of Minnesota's brief Tall Garden Phlox for Minnesota that provides care information and disease and insect damage descriptions. There also is a listing of recommended varieties.

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