Answer: The answer to your question depends in part on how far south you are moving. The reason for this is that lilacs require a cold chilling period every year and may not thrive or even bloom in warmer areas of the south. The plants are generally good vigorous growers and should be well established in three or four years, so they may be larger than you'll want to try to dig up and move. On the other hand, they are pretty sturdy plants and would have a decent chance of surviving a move, especially if it is done in early fall or very early spring. Then and again, you may find it preferable to simply replace them, possibly with something chosen specifically to suit your new location.
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