I am always taking cuttings from people, and have found that they only root at certain times, I think in spring, and you will need root starter.
By
04/10/2011
You don't bother with a cutting. I don't know if this is true or not but I took shoots from a friend, planted in 5 spots, and the one that did the best was the one I planted 2 together. Be careful if you weed and feed, I got to close to them and they turned black on me. Hoping they come back this year.
By
04/10/2011
Lilacs put out shoots, little upstart plants around the base, that is the easiest way to start a new plant. I am not sure you would have any luck starting one from a cutting. But I wish you luck, I have never had one root myself either in water or soil.