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Image by Dan Meyers

Our Purpose


RTI has established a leadership position in offering effective biological and plant nutritional treatments. Since 1993, over 350 million forestry seedlings and thousands of acres of disturbed habitats have been restored with our company's products and technologies. 


RTI is best known as the United States’ oldest-running and a most renowned producer of premium Mycorrhizal inoculum. In recent years, the core technologies that RTI focuses on, soil biology and plant nutrient supply, have been adapted to other markets including agriculture, landscape management, and home gardening. 


We are committed to providing the world with biological products that continue to improve plant establishment rate and regenerating the soil food web for a more sustainable future.

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