| It only has a few spike-branches about 5'-7' tall and very mis-formed. Can it be saved and how. How do you replant a spike or is that even a thing that you do.I appreciate your expertise in this matter.
|Lilacs can get leggy when they aren't routinely pruned - and since all of the flowers develop at the ends of the branches, yours probably has only a few at the very top of the plant. I know it sounds mean, but cutting the branches back by a couple of feet will encourage new growth lower down on the plant. You may sacrifice flowering this year, but you'll end up with a shorter, fuller shrub. Do this for the next 2-3 years and you should end up with an attractive lilac bush.
Best wishes with your garden!