Description
This article was written and reviewed by Serge, MSc. I hold degrees in Plant Biology, Environmental Biology and Biogeochemistry, with research experience in plant physiology, ecosystem science, and field-based environmental studies. Every article on this site is grounded in real academic training and genuine scientific research.
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Why soil life shows up in your plants
Plants depend on the living part of soil: the microbes and small animals that break down organic matter and release nutrients. When that life slows down, plants struggle long before the soil looks any different. This guide teaches you how to tell if soil is healthy by checking what lives in it, using the same idea I measured in field research on soil respiration.
Five tests, rated
- Look and smell check (10 minutes)
- Earthworm count (30 minutes, USDA NRCS method)
- Cotton strip test (60+ days)
- Tea bag test (about 90 days)
- CO₂ burst kit (24 hours)
Each comes with clear steps, a scoring scale and an honest note on its limits.
Best suited to garden beds, raised beds and large outdoor containers, where you can dig a spadeful of soil.
Inside: why soil breathes, when to test, all five methods, how to compare spots fairly, what results can and cannot tell you, and seven fillable logs.
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