The host of the fungal pathogen, Syringa vulgaris or the common lilac, is an ancient plant with significance in horticultural activities and wild roots in eastern Europe.

When the pathogen is sufficiently advanced, the presence of small dark dots indicates the production of cleistothecium (chasmothecium), an important structure in the protection of potential inoculum.

[8] There are methods to treat powdery mildew using home-made preparations including fresh milk, which contains the active anti-pathogenic compound lecithin.

[10] Other experimental treatments include using baking soda (disrupts pH), neem oil (fungicidal properties), or sulfur containing solutions.

Compounds with high risk such as thiophanate-methyl can be referred to in the FRAC (Fungicide Resistance Action Committee) Code List document.