In Search of Soil with Diego Footer
The Modern Grower Podcast Network 1 episodes Nov 10, 2026
In Search of Soil is a gardening and soil science show hosted by Diego Footer. Each episode takes a single common claim about soil — such as sand fixing clay or loam being ideal — and tests it against peer-reviewed research and university extension work, then delivers a verdict of busted, half true, confirmed, or the wrong question entirely. Between those episodes, Diego interviews soil scientists, agronomists and researchers whose studies underpin the show. There are no product pitches or shortcuts, and every figure comes with a cited source, with his own calculations clearly labelled as such.
Episodes
Why Your Garden Stays Dry Even After You Water
If your sandy soil won't hold water, you may have one of two very different problems: water that drains straight through, or soil that refuses to take water in at all. This video shows you how to tell them apart with a free test using one drop of water and a clock, when adding clay actually helps, and why it doesn't simply make sand hold more water. You'll also get the practical steps
Heavy Clay Soil? Stop Trying to Fix the Clay
When soil is hard to dig, we blame the clay, but heavy clay only tells you what you're starting with, not why your soil is struggling. This video walks through the four things that wreck soil structure, what gypsum can and can't do, and why fresh green material and compost build crumbs on different clocks. You'll finish with four free tests you can run in your garden in one afternoon t
Why Your Soil Is Hard to Dig: 4 Common Reasons
Fill two containers with equal volumes of dry soil, one well-structured clay and one sand, and the clay can weigh less. That's why "heavy" describes how the digging went, not what's wrong with your soil. This video walks through four common reasons soil gets hard to dig, which ones your own habits cause, and what gypsum and a standard soil test can and can't tell you. Heavy c
Why Clay Matters So Much in Your Soil (and What the Heck Is Silt?)
Seven 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 clay but 85% sand to call it sand, and whether loam really is the ideal soil. This is In Search of Soil, where we dig past the myths and get to th
Loam Isn't the Ideal Soil. There Isn't One.
Seven 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 clay but 85% sand to call it sand, and whether loam really is the ideal soil. This is In Search of Soil, where we dig past the myths and get to th
Why Sand Can't Turn Your Clay Soil in Loam
A 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 change, which is why my bed was never going to become loam. I score all seven claims from my old video and finish with what I’d do for heavy clay instead. This is In
I Told You to Add Sand to Clay Soil. I Was Wrong
A 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 every amendment you buy. This is In Search of Soil, where we dig past the garden myths and get to the science, one claim at a time.
Exploring the Fascinating World of Fungi with Dr. Elizabeth Koziol (Conversations)
Exploring 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 from her career working with arbuscular mycorrhizal fungi, debunking common misconceptions and explaining the intricate relationships between fungi and plants. L
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