Aspects of the invention relate to organic biostimulant compositions, including, for example, formulations comprising corn steep liquor (CSL) and water. In certain illustrative embodiments, the organic biostimulant composition further comprises from one to five microbial strains as an inoculant. Another aspect of the invention relates to a method of cultivating plants that comprises the steps of preparing an organic biostimulant composition comprising water and CSL, and applying the organic biostimulant composition through a delivery system to a growth medium supporting plants.
