If you are just starting out, you may wish to have a professional soil test done at least once to rule out any unusual problems. Typically the lab report will note any problems and recommend corrective measures. There are many locally available sources of nitrogen. Not only are nutrients provided, but the overall soil structure is also improved. Clay soils are lightened and drain better.
Sandy soils are able to retain more moisture.
This is achieved by spreading a 2-inch deep layer of compost on the surfacing and tilling to a depth of about six inches. Few dedicated gardeners are ever totally satisfied with their soil. Local soil conditions. As mentioned already, Eastern Washington soil tends to be alkaline. There can be significant variation in pH even on a single property.