pruning lilac bush
I have a beautiful lilac bush that has never been pruned. I am learning that it should be pruned 1/3 each year. This bush has beautiful blooms at the ends of every branch and all branches appear to be dead in the middle, but with a flower on the end. How should I prune it? Or should I just let it go which is what they have done for years. I also have a couple lilac bushes that have "dead" center branches, but small amount of growth and leaves at the top. Should I cut the dead branches to the ground? Thank you for your help.
Hennepin County Minnesota