Although the lilac is considered a very robust and resistant plant, it can - like any other living thing - become ill. The powdery mildew fungi, which are omnipresent in nature, can also be found again and again on the flowering shrubs.
Powdery mildew stops at no plant
powdery mildew
Powdery mildew, also known as "fair weather mildew", loves warm and dry weather. Its spores are mainly distributed by the wind but also by various insects and can even survive a frosty winter. So if your lilac shows the typical signs, you should act. It is best to spray the lilacs regularly from the moment they sprout with a field horsetail decoction that you have made yourself.
Wrong mildew
In contrast to the "fair weather fungus", downy mildew prefers rainy weather. It tends to appear in damp summers, but like powdery mildew, it can be easily combated or prevented with field horsetail decoction. You should also remove affected shoots and leaves. Chemical agents are usually not necessary for both forms.
tips
Instead of a brew made from field horsetail, you can also prepare one made from garlic or tansy. As a precaution, lilacs should always be placed in a sunny location with a sufficiently large planting distance.