I have a problem with a full grown lilac of probably 40 year..
The leafs are turning to form a crooked cup... in the bottom there is a
powder that looks like dust and also white acarian spiders...
As a results some of the branches are dead and I am worried it will die
I asked for an specialist and he suggest systemic fongicide... very strong
and chemical... there are childrens around and I am hesitant to use chemical products