Different plants need different types of microbial communities. Before any course of action is implemented, a SoilKeepers Yard Improvement Plan to specify what types of plants the property owner wants in what locations is needed.
Because plants can thrive in a wide variety of soil types, if healthy communities of soil microbes exist, the Soil Biology portion of a soils test is the most important.
Soils in Virginia have all the nutrients they need for plant growth. What is needed is a balanced community of bateria, fungi, and other microbes to make these available to plants.
Properly prepared compost, compost teas/extracts, and biostimulants are the best way to introduce the types of bacteria, fungus, and other soil microbes your plants need.