Soil problems can be difficult to diagnose. When plants struggle, it is not always obvious whether the problem is poor drainage, low organic matter, compaction, exhausted biology, or some combination of these. Most soil improvements fall under the broad category of soil amendments, but these amendments generally serve two very different purposes: conditioning and rejuvenation. Put simply, is your soil biologically active but physically unsuitable for plant growth? Is it structurally sound but biologically depleted?...