nor education 10 min read

By TerraCare

Is Terramation Soil Nutrient-Rich? What Makes NOR Soil Different (colloquially referred to as human composting)

When a loved one completes the natural organic reduction (NOR) process, the result is approximately one-half cubic yard of soil — biologically active, rich in organic matter, and teeming with the microbial life that sustains healthy ecosystems. This is fundamentally different from what cremation produces. Cremation reduces the body to calcium phosphate “ashes” with a highly alkaline pH and almost no living organisms. NOR soil, by contrast, contains the nitrogen, phosphorus, potassium, carbon, and microbial communities that gardens, forests, and restoration projects genuinely need. If you are wondering whether terramation soil is truly nutrient-rich, the short answer is: yes — and the science of how that happens is worth understanding.

Is terramation soil nutrient-rich enough to support plant growth?

Yes. Terramation soil contains the same macronutrients plants require — nitrogen, phosphorus, potassium, and carbon — plus a living microbial community that continues to cycle nutrients after application. This makes it fundamentally different from cremation ash, which is sterile calcium phosphate with a pH of 10–12 that actively inhibits plant growth at concentrated levels.

  • NOR soil is biologically active — it contains nitrogen, phosphorus, potassium, organic carbon, and living microbes that support plant growth.
  • Cremation ash is sterile calcium phosphate with a pH of 10–12, essentially no nitrogen or carbon, and can inhibit plant growth rather than support it.
  • Phosphorus from bone mineral is reincorporated into NOR soil and becomes more bioavailable over time through continued microbial activity.
  • Mycorrhizal fungi in NOR soil extend root reach and dramatically improve nutrient and water absorption for surrounding plants.
  • NOR soil functions like mature compost — it improves soil structure, water retention, and microbial diversity in any landscape where it is applied.

What Does “Nutrient-Rich Soil” Actually Mean?

Before comparing NOR soil to cremation ashes, it helps to understand what makes any soil nutritionally valuable. Soil scientists and agronomists assess soil quality along three dimensions: physical structure, chemical composition, and biological activity. All three matter.

Chemical nutrients are the minerals and compounds plants draw on to grow — primarily nitrogen (N), phosphorus (P), and potassium (K), along with trace minerals and organic acids. But raw chemicals alone don’t make soil fertile. Nutrients need to be in a form plants can actually absorb, and that bioavailability depends almost entirely on the third dimension: the living organisms in the soil.

Biological activity is what separates dirt from healthy soil. A teaspoon of productive garden soil contains more microorganisms than there are people on Earth, according to the U.S. Department of Agriculture’s Natural Resources Conservation Service. These bacteria, fungi, protozoa, and nematodes continuously break down organic matter, release bound nutrients into plant-available forms, suppress plant diseases, and build the soil’s physical structure. They are the engine of soil fertility.

Organic matter is the fuel for that engine. Soil science literature consistently documents that organic matter serves as a slow-release reservoir for nitrogen, phosphorus, potassium, and sulfur — nutrients stored in organic form that resist leaching and remain available to plants over extended periods, in contrast to the rapid flush-and-leach cycle of synthetic fertilizers.

Understanding how terramation works helps make clear why NOR is able to produce soil with all three of these qualities intact.

What NOR Soil Contains

Natural organic reduction works by placing a body alongside plant material — typically straw, wood chips, and other carbon-rich matter — in a controlled vessel. Over several weeks to a few months, microbial activity breaks down soft tissue, transforming the organic material into stable, humus-like soil. The heat generated by microbial decomposition also eliminates pathogens, producing a soil output that is both biologically active and safe.

The result is what TerraCare Partners calls Regenerative Living Soil™ — a soil that carries the biological and chemical hallmarks of good compost, plus the mineral contribution of human remains.

What the soil includes:

Nitrogen is a critical plant macronutrient and one of the primary products of organic decomposition. Soft tissue, which is protein-rich, is a significant nitrogen source. As microbial communities break down proteins during NOR, nitrogen is released into the soil matrix in organic forms that microbes and plants can use.

Phosphorus is contributed substantially by bone mineral. Human bone is approximately 70% hydroxyapatite, a calcium phosphate compound. During NOR, the extended exposure to heat and biological activity helps convert some of this mineral phosphorus into forms more accessible to plant uptake over time — a meaningfully different outcome from the inert calcium phosphate in cremation ash.

Potassium and trace minerals cycle through the organic matter fraction of the soil. They are not produced in large quantities by any single composting process, but the organic matter matrix that NOR produces creates the microbial environment in which these nutrients are cycled and retained rather than lost.

Microbial biomass — the living community of bacteria and fungi — is arguably NOR soil’s most distinctive feature. These organisms do not just exist in the soil; they actively make nutrients available, build soil aggregates that improve water retention, and support the mycorrhizal networks that connect plant root systems underground. The U.S. EPA notes that compost-derived soil “benefits soil biology by improving the diversity and abundance of beneficial soil organisms, who feed on soil organic carbon and make nutrients available for plants to use.”

Organic carbon in stable humic forms is what gives healthy soil its dark color and its capacity to hold both water and nutrients. Organic carbon is essentially absent from cremation ash; it is central to NOR soil.

For a deeper look at the specific nutrient profile, see our article on Regenerative Living Soil™ nutrient analysis.

What Cremation Ashes Are — and Are Not

It is important for families making end-of-life decisions to understand what cremation actually produces. The white-gray powder returned after flame cremation is not soil, not compost, and not a plant nutrient in any meaningful biological sense.

Cremation ash is composed primarily of calcium phosphate (Ca₃(PO₄)₂) — the mineralized residue of bone after temperatures of 1,400–1,800°F have burned away all organic matter, all water, and all microbial life. What is left is a chemically inert compound.

The problems for soil and plant life are significant:

  • Extreme alkalinity. Cremation ash has a pH ranging from roughly 10 to 12 — approaching the alkalinity of bleach. Healthy soil pH typically falls between 5.5 and 7.5. At pH levels above 8 or 9, most plants cannot absorb nutrients even if those nutrients are present, because the chemical reactions that make nutrients bioavailable shut down.

  • High sodium content. Cremains contain sodium levels far in excess of what plants can tolerate. Research from the University of Minnesota Extension has shown that high-salt conditions in soil impair plant water absorption and stunt growth.

  • No living organisms. The incineration temperatures that produce cremation ash eliminate all microbial life. There are no bacteria, no fungi, no protozoa. The result is a sterile powder that cannot support the biological activity healthy soil depends on.

  • Phosphorus locked in insoluble form. While cremation ash does contain calcium phosphate, it is not in a soluble or bioavailable form. Plants cannot draw on it directly. Unlike NOR — where biological activity gradually releases phosphorus into plant-available forms — cremation ash’s phosphorus is largely inaccessible.

This comparison is explored in greater depth in our article on terramation soil versus cremation ashes.

The Living Soil Concept: Why the Microbiome Matters

Soil health advocates and ecologists sometimes describe high-quality soil as “living” — not as metaphor but as biological description. Healthy soil is an ecosystem, not a substrate. Its function depends on the interactions between hundreds of species of microorganisms, the organic compounds they produce and consume, and the physical structure they build.

The Ohio State University Extension’s factsheet on soil microbes describes what a healthy microbial community provides: bacteria rapidly colonize fresh organic material, breaking it into simpler compounds; fungi — which are more efficient at converting carbon — build stable long-term structures in the soil; protozoa consume bacteria and release nitrogen as ammonium, putting it in a form roots can absorb directly. Every level of this microbial food web contributes to the soil’s fertility and resilience.

When NOR completes, the soil output includes this living community. That is what distinguishes it from cremation ash, from sand, and from sterile mineral substrate. The soil is not just a repository of nutrients — it is an active system capable of cycling those nutrients, supporting plant growth, and integrating into the broader soil food web of a garden or forest.

Mycorrhizal fungi deserve particular mention. These fungi form symbiotic associations with the roots of more than 80% of land plant species, dramatically extending the root’s reach and ability to absorb water and nutrients. They are one of the primary reasons that NOR soil transplanted into a garden or forest does not just add nutrients but enhances the long-term health of the surrounding soil ecosystem.

Why This Matters: From Gardens to Ecological Restoration

The practical applications of nutrient-rich, biologically active NOR soil span from intimate family memorials to large-scale restoration work.

Home gardens and memorial plantings. Families who receive NOR soil can use it to nourish gardens, plant trees, or establish memorial landscapes. Unlike cremation ash — which, in quantity, can harm plants or require neutralization before use — NOR soil can be incorporated directly. Many families find meaning in seeing something grow where their loved one’s remains now nourish the earth.

Forest restoration and conservation lands. Several NOR providers offer families the option of donating excess soil to conservation organizations and forest restoration projects. In degraded or recovering ecosystems, nutrient-dense, biologically active soil amendments can meaningfully support revegetation.

Ecological carbon sequestration. Healthy soil organic matter is a carbon sink. When NOR soil is incorporated into living soil systems, the organic carbon it contains is not immediately released back into the atmosphere — it becomes part of the soil’s carbon pool. This is one of the reasons that terramation’s environmental impact extends beyond simply avoiding cremation emissions.

For guidance on how to safely use terramation soil in your own garden, see our article on terramation soil safety for gardens and plants.

NOR, the Law, and the Soil You Receive

Natural organic reduction is currently legal in 14 states, including Washington, Colorado, Oregon, California, Vermont, New York, Nevada, Arizona, Maryland, Delaware, Minnesota, Maine, Georgia, and New Jersey. Washington’s SB 5001, signed into law in 2019, was the first legislation in the United States to authorize NOR as a legal disposition method and to establish the regulatory framework under which the soil output is treated as the final remains returned to the family.

Washington State’s legal framework — and the standards that followed in other states — treat the soil as human remains throughout the process. This is not incidental. It means the soil a family receives has been produced under defined conditions, with pathogen-reduction standards built into the process, and that the family’s loved one’s contribution to that soil is preserved, not discarded.

Ready to Learn More?

If you have questions about terramation services, the soil your family would receive, or how to find a provider near you, TerraCare Partners can help.

Ready to explore terramation options? Contact TerraCare Partners

Find a funeral home offering terramation in your state

Sources

  1. U.S. Environmental Protection Agency — “Benefits of Using Compost.” https://www.epa.gov/sustainable-management-food/benefits-using-compost

  2. U.S. Department of Agriculture, Natural Resources Conservation Service — Soil Health. https://www.nrcs.usda.gov/conservation-basics/natural-resource-concerns/soil/soil-health (Note: This URL returned timeout errors during Phase B review on April 3, 2026 — NRCS domain appears temporarily unavailable. The organic matter nutrient reservoir discussion in this article has been revised to remove the specific per-acre figures attributed to this source, as the URL could not be verified in this session. Retain for CMS upload pending live verification.)

  3. Ohio State University Extension — “Understanding Soil Microbes and Nutrient Recycling” (Factsheet SAG-16). https://ohioline.osu.edu/factsheet/SAG-16

  4. Washington State Legislature — SB 5001 (2019), “Concerning Human Remains.” https://app.leg.wa.gov/billsummary?BillNumber=5001&Year=2019

  5. Washington State Legislature, WAC Chapter 246-500 — Natural Organic Reduction, 2026. https://app.leg.wa.gov/wac/default.aspx?cite=246-500

  6. Eternal Tides Funeral Services — “Cremated Ashes Aren’t Good for Plants or Soil.” https://www.eternaltidesfmwf.com/blog/cremationproblems3

This article is part of TerraCare Partners’ guide to terramation soil quality and environmental impact. For a complete introduction to the NOR process, visit how terramation works.