Lilac Bush Care Disease. This can affect many lilac varieties and some research suggests white lilacs are most vulnerable. What are known lilac issues that might produce these symptoms?
Plant shrubs at least five to six feet apart. How to rescue a diseased lilac bush powdery mildew. Vulgaris and hyacinthiflora cultivars are susceptible in varying degrees to bacterial blight (psuedomonas syringa).
