Ours was pretty much dead but about 25% of the bush is still healthy, cut it all up this evening, almost a quarter cord of firewood from the lilac plus some of the dead wood we took out of our apple tree. Some of the lilac that is left is still quite iffy but well leave it for a year and see how it does next spring. My parents in High River had a 20 year old cherry not make it through he winter.