The Survival Podcast Biochar & the End of Sell-Out Farming – Epi-3794
Feb 4, 2026
Zack Farr, a third-generation Florida farmer turned regenerative ag entrepreneur, builds mobile systems to turn wood waste into biochar for soil and water restoration. He recounts discovering biochar from burn piles and explains how carbonizing waste can rebuild soil, filter water, create local jobs, and keep land productive. Practical startup lessons, municipal partnerships, and scalable uses are also explored.
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Backcast From Big Goals; Start Small
- Start with a clear feedstock and a minimum viable production method before scaling to expensive equipment.
- Backcast from a big vision and progress through safe, affordable steps like 50-gallon drum kilns to mid-sized air burners.
Blend Biochar Conservatively
- Use biochar as a soil enhancer at modest blends (5–20%) and run soil tests first to set rates.
- Start small, monitor results, and increase gradually; too much can lock the soil or cause problems.
Potting Mixes Proved Drought Buffering
- Jack reported potting mixes with 10% biochar dramatically improved drought resilience, keeping plants alive far longer without water.
- American Biochar trials also showed visible differences after three years with liquid biochar applications.
