5E9 Probiotic Soil Inoculant

5E9 Probiotic Soil Inoculant is a concentrated living microbial soil amendment that delivers 5 billion CFU per listed bacterium to build a thriving root-zone microbiome. This multi-strain inoculant combines nine well-studied bacteria to support nitrogen fixation, mineral solubilization, and natural defense in soil and soil-based media.

At a glance

• Type: Living probiotic soil inoculant (microbial amendment)
• Concentration: 5 billion CFU per listed bacterium
• Strains: Paenibacillus polymyxa, Bacillus subtilis, B. amyloliquefaciens, B. licheniformis, B. megaterium, B. thuringiensis, B. cereus, Pseudomonas putida, and P. fluorescens
• Function: Enhances nitrogen fixation and mineral solubilization to improve nutrient availability
• Certification: Organic
• Origin: Made in the USA
• Application rate: 1/2 teaspoon per gallon of water

Best for

• Home gardeners growing vegetables, herbs, ornamentals, and fruiting plants in soil
• Greenhouse and indoor growers boosting transplant success
• Small-scale farms working with raised beds, containers, or seedling trays
• Growers seeking a natural alternative to synthetic inputs
• Improving root health and canopy vigor in marginal soils

How to use

During every other watering, apply 1/2 teaspoon per gallon of water from the start of growth through mid-flower to establish and maintain the beneficial population in the root zone. At transplant, apply directly to the roots to speed colonization. Continue at the same 1/2 teaspoon per gallon rate on the watering schedule that matches your growth stage.

About The Soil Makers

The Soil Makers build soil-first products focused on nutrient availability through microbial activity and mineral balance, with clear guidance for everyday growers.