Can you tell me if lilac bushes have to be pruned? They didn’t bloom this year on the same branches that they did last year. If i cut off the old dead flowers will it kill them or make them bloom there next yr. It was there when I bought my house 4 yrs. ago. It is about 7ft. tall. & just as wide. I would say it is pretty old. | Hewitts Garden Centers
You are here: Home FAQ Can you tell me if lilac bushes have to be pruned? They didn’t bloom this year on the same branches that they did last year. If i cut off the old dead flowers will it kill them or make them bloom there next yr. It was there when I bought my house 4 yrs. ago. It is about 7ft. tall. & just as wide. I would say it is pretty old.