Jun 04, Propagating Lilacs in pots. Some of the Lilac bushes I had rooted from cuttings were still in their containers and had suckers coming up in the pots. So I decided to divide those as well. It was quite simple as the roots were not that big yet. For potted lilacs, you just pop the Lilac out of the bushleaning.buzzted Reading Time: 7 mins. Take cuttings of lilac bushes from tender new growth in late spring or early summer. Mature growth is less likely to root. Dip the bottom of the cutting in rooting hormone and plant it in the hole, then pat the potting mix lightly around the base of the cutting so it stands up straight.
Feb 12, Provide each lilac cutting with 1 inch of water immediately after planting. Afterward, unless a sufficient amount of rain falls, give the cuttings about an inch of water a week, especially during.