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.

Home & Garden Rhizol

Rhizol Soil Inoculant & Seed Treatments

Rhizol is available for lawn and garden enthusiasts for home gardening and lawn projects in both 20-gram and 5-gram package sizes.   Containing all of the same microbial content as larger volume Rhizol products, these convenient package sizes are perfect for the home gardener.

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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.