Hi - I bought a 3' Lilac that was (and is) afflicted with mildew and
blight. It has been in my yard for a few months now. About 5% of the
leaves are totally fine, 80% have mildew and the others (and some of
the mildew ones) have blight. There are some new suckers coming up.
Should I remove all leaves that have blight/mildew or both? If I
remove all sick leaves, the plant will have maybe 5 leaves on it.
Should I not worry about it as they will fall off over winter and it
will be better next year?
thanks!