I'm curious - does everyone follow the rule, that alpine soil should be lean? That's what I've read and have been told by experienced alpiners, but it doesn't make sense to me. The mail order nursery, High Country Gardens sells some plants that can be used as alpines, and they suggest using all kinds of micronutrients, manures, etc. when preparing the soil and caring for the plants because they say xeric plants need a good supply of it. My garden has been going for a few years now, so whatever minerals were available, have surely become depleted. It's also been suggested to me to completely redo my soil every few years.
I appreciate all comments!