A composition based on three strains of microorganisms to promote plant growth and serve as a plant protection product to protect plants from damaging influences including plant disease, pests or insects. The composition is comprised of Paenibacillus polymyxa M.sub.10, Azospirillum canadense B.sub.2, and Bacillus pumilus L.sub.13. A mineral mix is used to maintain the microorganism viable for a long time, maintaining high efficacy as a biopesticide and biofertilizer. The mineral mix combined with the fermented microorganisms is then further combined with a nutritional additive to enhance the biofertilizing and biopesticidal features of the composition. The resulting composition can be applied to plants in liquid form or to the soil in solid form.