I have a Princess Kay Plum that is several years old. I'm getting plenty of suckers the past couple years, and am wondering if they will grow into mature trees if I dig them up. If so, would I keep a section of the horizontal parent root attached to the sucker? Would I stick them or water to develop roots, or plant them in some peat or potting soil? Any other tips? It's a beautiful little tree, and it would be fun to have more in our 7 acre space. Thank you!