996: The Plant Nutrition Revolution Has Arrived

How we are finally figuring out Plant nutrition with Landen SchaellingIn this month's Seed Chat, Greg Peterson and Bill McDorman welcome Landen Schaelling of Sacred Soil Solutions to explore the emerging science of rhizophagy, the process by which plants consume microbes for nutrition. The conversation examines how endophytes, fermentation, compost, and seed saving may work together to improve plant health, resilience, and flavor. They also discuss practical ways gardeners can introduce beneficial microbes into their gardens while highlighting the rapidly evolving research that is reshaping our understanding of soil biology and plant nutrition.

Our Guests: Landen Schaelling is the founder of Sacred Soil Solutions. He is focused on bringing optimal and approachable microbe inputs to gardeners and homesteaders, while also teaching farmers in the American West how to implement soil building solutions at scale.

And Bill McDorman has committed his life to community-based seed stewardship. In 1984, he started Seeds Trust High Altitude Gardens, a bioregional mail order seed company that he ran for 28 years. He authored the book Basic Seed Saving in 1994, and in 2010 Bill and his wife, Belle Starr, founded Seed School.

Key TopicsRhizophagy (root-eating process)Endophytes and plant microbiomesSoil microbiologySeed saving and local adaptationHorizontal gene transferFermentation for microbial cultivationCompost and fungal soil biologyMicrobe Master MixEffective Microorganisms (EM/EM1)Dr. James F. WhiteJohn Kempf's Plant Health PyramidDr. Christine JonesBiochar and Terra PretaSacred Soil Solutions

Key Questions AnsweredWhat is rhizophagy?Rhizophagy is the process by which plants absorb living microbes through their root tips, consume many of them for nutrition, and release others back into the soil, creating a dynamic relationship between plants and soil biology.

What are endophytes?Endophytes are beneficial bacteria and fungi that live inside plant tissues without causing disease. They become part of the plant's internal microbiome and contribute to nutrient cycling, resilience, and overall plant health.

Why is this research changing how we understand plant nutrition?Emerging research suggests healthy plants obtain much of their nutrition by consuming living microbes rather than relying solely on dissolved minerals in the soil, expanding traditional models of plant nutrition.

Why are locally saved seeds so valuable?Seeds saved in a local environment gradually adapt g