Yes, it's just like the common purple one, and would take over your property if allowed.
I don't know if I ever told you about our old purple lilac. When we bought the place 24 years ago there had been a road up to an old house that had long since burnt down, around 1900. The basement of the house is still there, and the road had grown all up, so we had to put a new road in. We did that in December, and then built in the spring. But in the spring we saw the lilacs the road had gone through. What we assume was the homeowner had bought two lilacs, and planted one at the back door and one at the front. Around the late 1800s they used to peddle lilacs door to door.
Those lilacs are now around 100 feet X 40 feet. And our roadway goes through the lilacs, and when they bulldozed for the roadway they pushed lilacs all over.
Here's a pic of a fence we put in when we first moved here. The lilacs are taking over the fence.
