I have 5, 2-3ft, small lilac shoots emerging around my yard. I had to remove them and wanted to prevent them just getting mowed. They have pale purple flowers and unsure of any variety, they have been on the property for well over 20 years.
At full maturity they are approx 10ft and can form a nice hedge.
I wanted to offer them for sale, before I just replant them elsewhere in the yard.