Last week I purchased two potted semi-dwarf plum trees - Santa Rosa and another more prune type whose name escapes me at the moment.

Our many apple and pear trees have done well here over the years and we have native plums growing in the area. When excavating for our new home, we did discover a thin layer of moist soil about 5 feet down that the excavator called "topsoil." That told me why my mature trees do well with little supplemental water.

Our property has very sandy soil with a high pH. I amend liberally with compost as often as possible. However, at present, I don't have any finished compost

What do I need to know about transplanting these trees into the soil? I've never root pruned so would need some guidance if that becomes necessary. My other fruit trees were all bare root, rather than potted.