Rhizol. Doing it Nature’s way.

ProGro Bio’s flagship product, Rhizol, represents a culmination of over 40 years of rigorous microbial research and development. This groundbreaking broad-spectrum soil biological is unparalleled in the industry for its microbial diversity, biological activity, microbial isolate concentrations, and delivery methods.

Rhizol Soil Inoculant & Seed Treatments

Rhizol Soil Inoculant & Seed Treatments

RHIZOL consists of 35 microbial isolates from six different microbial classes. Each microbe demonstrates specific biological properties and modes of action, producing well-documented and significant benefits for agricultural, horticultural, and silvicultural plant production.

Rhizol is available in 200 gram, 400 gram package sizes. Rhizol soil inoculant ships in a dry form and is fully soluble at time of application and has an extended shelf life unlike any other soil microbial on the market today. Rhizol Soil Inoculant can also be used as a seed treatment for Corn, Cotton, Soybean, Wheat/Small Grains, and Rice crops.  

The product packages contain instruction for use as a seed treatment if desired.

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Explore Available Sample Labels

To purchase Rhizol products for agricultural application, contact your local dealer/distributor or reach out to a ProGro representative for retailers that carry our products
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Unrivaled Microbial Formulations That Really Work!

ProGro Bio, a Georgia-based Ag-Tech powerhouse, pioneers 100% all-natural, organic solutions with a rich library of proprietary isolates. Over four decades, we've sourced living organisms, ensuring non-GMO, non-carcinogenic formulations of significant bioactivity. Our formulations, tested under various conditions, exhibit remarkable results on 43 unique crops, including cotton, tomatoes, corn, potatoes, hemp, and soybeans, as well as 10 turf grass species and 16 horticultural crops, addressing specific agricultural and environmental challenges.