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In Search of Soil with Diego Footer
by The Modern Grower Podcast Network
Today: #100 in Science, United Kingdom on our combined chart.
Today: #193 in Science, New Zealand on our combined chart.
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Latest episodes
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Why Clay Matters So Much in Your Soil (and What the Heck Is Silt?)
October 29, 2026 · 18 minSeven of the twelve soil types on the USDA texture triangle have "loam" in their name, which is why almost everyone thinks they have it. Here's how to read the chart that shows up in every soil article, why it takes 40% clay to call a soil…
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Loam Isn't the Ideal Soil. There Isn't One.
October 27, 2026 · 13 minSeven of the twelve soil types on the USDA texture triangle have "loam" in their name, which is why almost everyone thinks they have it. Here's how to read the chart that shows up in every soil article, why it takes 40% clay to call a soil…
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Why Sand Can't Turn Your Clay Soil in Loam
October 22, 2026 · 23 minA few years ago I told you to fix clay soil by adding sand, then pulled the video down. Here’s why my clay ball demo fooled me, what diluting clay with sand would really take, and the one number in your soil that no amount of sand can…
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I Told You to Add Sand to Clay Soil. I Was Wrong
October 20, 2026 · 13 minA few years ago I told you to fix clay soil by adding sand. It was terrible advice. Today I correct the record. Here's the 10-second arithmetic that shows I used about one-eighth of what it would take, and why the same math applies to…
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Exploring the Fascinating World of Fungi with Dr. Elizabeth Koziol (Conversations)
September 22, 2026 · 1 hr 16 minExploring the Fascinating World of Fungi with Dr. Elizabeth Koziol: From Dumb Luck to Mycorrhizal Wisdom Elizabeth is a mycologist whose accidental journey into the world of fungi turned into a lifelong passion. She shares her experiences…
About the show
Most of what gardeners are told about soil is repeated, not tested.
In Search of Soil takes one claim at a time and checks it. Sand fixes clay soil. Loam is the ideal soil. Heavy clay is heavy. Each episode puts a single claim on trial against peer-reviewed research and university extension work, then reaches a verdict — busted, half true, confirmed, or occasionally the wrong question entirely.
Between episodes, Diego sits down with the soil scientists, agronomists and researchers whose work those episodes are built on. The people who ran the studies, drew the charts, and know better than anyone where the evidence actually stops.
No product pitches. No hacks. Every number on the show comes with a source, and the ones Diego worked out himself are labelled as his own arithmetic.
Hosted by Diego Footer.