A composition of matter comprising a granular form contacted with a first component comprising an agriculturally acceptable complex mixture of organic material characterized by natural organic matter that is partially humified, where the first component is dispersed on at least a portion of the granular form, or mixed or admixed with the granular form. A method of improving plant health comprises the step of contacting a locus of a sown seed or plant with a granular form, a first component comprising an agriculturally acceptable mixture of partially humified natural organic matter, where, in the contacting step, the first component is initially or subsequently dispersed on at least a portion of granular form, or mixed or admixed with the granular form.