Beware of commercial composts and potting mixes that contain "biosoilds" which is a marketing term for processed human feces.
The idea is simple. Plant an extra row of vegetables, and donate the harvest to your local food bank or shelter.
Botanicare - Kind Base
Micronutrient values may show a zero value for missing data. Over time the dataset will improve, but keep in mind that in some instances; especially with natural materials, the listed values given are rough estimates and will vary with samples from different sources.