 About four or five years. It's hard for me to say, but it's probably around five. Okay, so what you're going to do if you have time is to get a good digging spade and go around about 18 inches away from the stem and make a circle cutting down about six or eight inches or even a foot if you could. You want to cut the root system that is flourishing underneath so that it compacts some before you move it.