Soil as a Living System

Healthy soil isn't just dirt — it's a community of billions of organisms working together. In a single teaspoon of healthy garden soil, there are more microorganisms than people on Earth.

The Soil Food Web

The living community in your soil includes:

• Bacteria — decompose simple organic matter, make nutrients plant-available
• Fungi — extend plant root networks by 100x, transport water and phosphorus
• Protozoa — eat bacteria and release plant-available nitrogen
• Nematodes — regulate bacterial and fungal populations
• Earthworms — create channels for air and water, mix organic matter into soil
• Arthropods — shred organic matter into smaller pieces for bacteria and fungi

Why This Matters for Regenerative Growing

Conventional gardening often ignores or damages soil biology — tilling breaks fungal networks, synthetic fertilisers suppress biological nutrient cycling, bare soil kills surface organisms.

Regenerative practices feed the soil food web:

• Compost adds diverse organisms and food for them
• Mulch protects soil surface organisms from UV and heat
• No-dig preserves fungal networks and soil structure
• Cover crops keep living roots in the soil year-round
• Diversity above ground drives diversity below ground

Tracking Soil Health Over Time

This is where records matter. If you test your soil now and record the results, then compost and mulch for a year and test again, you can see the change. Without records, you're guessing.

The next two lessons teach you two simple tests you can do at home. Each one becomes an activity with structured observations that you can repeat and compare season after season.