Tag Archives: syringa

Powdery Mildew on Lilac

   It’s the time of year when you’re likely to notice the leaves of your lilac shrubs (Syringa) covered in a powdery, white substance known as powdery mildew. Powdery mildew on lilac is a fungus whose causal organism is Microsphaera penicullata. … Continue reading

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