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Regenerative Design
Journal Teachings, reflections, analysis and case studies from land, life and business that regenerate.
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When you understand how soil works, and what good compost does to it, compost stops being just “organic matter”, it starts becoming something much more powerful. Good compost does not simply add nutrients to the soil once. It helps build a living system that keeps cycling fertility over time. Microbes decompose organic matter and release nutrients. Then microbial predators like protozoa and nematodes consume those microbes and release even more nutrients in plant-available forms. That means compost is not just feeding plants directly — it is helping create a continuous flow of fertility in the soil in a way chemical inputs alone cannot. And once you understand that, you do not just want compost. You want to understand how to make it well, how to test it, and how to use it with intention.
 Compost as Living Fertility: What We See, What We Test, and Why It Matters
There is something deeply satisfying about holding finished compost in your hands. Dark. Crumbly. Sweet-smelling. Full of life. At first glance, what we notice is the color and the texture. It looks rich. It feels soft and biologically active. It has that unmistakable quality of something that has moved through decomposition well and has become stable, usable, and ready to help build soil. But what makes compost like this truly powerful is not just what we see on the surface. It is what that compost is doing physically, chemically, and biologically. That is the deeper story. And that is exactly the kind of story we want people to understand here at Sun and Bloom Farms. Compost is not just “rotted material", and good compost is definitely not an accident. It is the result of understanding decomposition as a living system, and managing it with intention. Compost Is Not Just Waste Breaking Down A lot of people think composting means throwing organic materials into a pile and waiting. And yes, eventually, almost any pile of organic matter will decompose. But high-quality compost — the kind that supports real soil regeneration — comes from a much more intentional process. In our teaching, we often say that composting is not just decomposition: It is managed decomposition. That means we are paying attention to the conditions that allow biology to thrive:
Looking at Compost Through Three Lenses One of the core ideas in our soil and compost approaches on the farm, something we make sure we teach in all of our courses also, is that healthy soil is always an interaction of three dimensions:
1. Physical: What We Can Feel and See Before we ever run a test, compost already tells us a lot. When finished compost is dark, crumbly, and well-aggregated, that physical structure matters. That kind of compost helps improve soil aggregation, pore space, root penetration, aeration, and water retention. It helps soil behave more like a sponge — taking water in, holding what plants need, and releasing excess more gracefully. This is one of the reasons organic matter is so powerful. Organic matter helps hold soil particles together in stable aggregates. It acts like both a sponge and a glue. It supports better water movement, reduces crusting and runoff, buffers chemical swings, and creates habitat for the biological life that makes fertility possible. So when we hold beautiful finished compost in our hands, we are not just admiring something pretty, we are looking at a material that can help transform the physical behavior of soil. 2. Chemical: What the Simple Tests Can Show Us Then we move into the chemical side. With a simple home soil test, we can begin looking at:
Those tests do not tell the whole story — but they do help us learn. They can give us a snapshot of nutrient presence and pH balance. And pH matters because it influences nutrient availability and also affects microbial communities. This is one of the most important shifts in regenerative soil work: fertility is not just about nutrients being present. It is about nutrients being available, buffered, held in place, and continuously cycled through living processes. That is why compost is so different from simply applying soluble fertilizers. A chemical fertilizer may give a quick response. But compost helps build the conditions in which fertility can be held, cycled, and released over time. It is slower, deeper, and far more resilient. 3. Biological: What the Microscope Begins to Reveal And then we come to the biological lens — the part that changes everything. Under the microscope, compost begins to tell an even richer story. Depending on the compost and how it was made, we may observe:
That matters. Because fertility is not just something we “apply.” Fertility is something that biology helps create and release. Microbes decompose organic matter. Predators consume microbes. Nutrients are released in plant-available forms. This is why one of the most important things to understand about healthy soil is this: Biology cycles fertility. This is also why we often say: Organic matter connects everything. Because organic matter improves structure, increases nutrient holding capacity, and feeds the biological community all at once. So when we test compost biologically, we are not just “looking for life.” We are learning whether this compost is carrying the kind of living community that can help activate the soil food web. How We Made This Compost (the one Lucian holds in his hand in the pictures) This particular compost did not happen by accident. It came from intentionally mixing different materials and managing the pile toward a strong thermophilic process. We worked with materials such as:
That diversity matters. Different materials bring different carbon levels, nitrogen levels, textures, minerals, and microbial communities. For active hot compost, we often aim near 25:1 carbon to nitrogen, with enough moisture, enough oxygen, attention to particle size, temperature, and turning. That is exactly the kind of thinking behind a compost pile like this.
And this is only one example. Here at Sun and Bloom Farms, we make multiple types of composts for different goals and different growing contexts. Some composts are meant more for our market garden, some are better suited for our orchard and perennial systems, some are made with seedling production in mind, and others serve different fertility-building purposes across the farm. So while the core principles remain the same, the recipe and the process are not always identical. There are important tweaks in materials, balance, moisture, timing, and management that help shape the kind of compost we want to produce. We’ll be sharing more of those differences and recipes in future posts. Why Compost Is Better Than Just Chasing Inputs In conventional systems, fertility is often treated like a math problem:
But in regenerative systems, we ask a deeper question:
That is a very different approach. Chemical fertility often works like fast food: quick, stimulating, sometimes useful, but not deeply nourishing to the larger system. Biological fertility is more like building a pantry and learning how to cook from it. It creates long-term resilience. It feeds relationships. It builds capacity over time. Compost is one of the clearest examples of this difference. Because compost does not just feed plants. It helps feed the system that feeds the plants. Compost does not just supply fertility — it helps create the biological conditions through which fertility keeps being released. What We’ll Be Showing Next This is only one part of the picture. In upcoming posts, we’ll compare what we see when we test:
That comparison matters because not all soils — and not all composts — are the same. A market garden often benefits from faster bacterial cycling. An orchard often benefits from a stronger fungal direction. And knowing the difference helps us design fertility more intelligently. That is the whole point: not just adding inputs, but learning how to read what the soil is telling us, and then respond well. Want to Learn More about this? If you want to learn this in person, we would love to invite you to our Master Composting & Soil Regeneration Intensive at Sun and Bloom Farms. It’s a full-day immersive experience where we go deeper into composting, soil testing, biological fertility, and how to build living soil systems with confidence. Click here for details and registration: https://www.sunandbloomfarms.com/store/p89/master-compost-soil-regeneration-intensive.html If you can’t attend in person, or if you’d prefer to learn with us from wherever you are, we’d also love to invite you to our Master Soil Regeneration — 4-Part Live Online Series. In this live online course, we go deeper into understanding soil foundations, reading and testing soil, building living fertility systems, and observing the biology behind healthy soil through real examples, live discussion, and additional resources. Click here for details and registration: https://www.sunandbloomfarms.com/store/p91/soil-regeneration-online.html And if you’d like to see this work in action first, we also have a 25-minute YouTube video where Lucian demonstrates how we begin testing compost through physical, chemical, and biological lenses — including simple at-home tests and live microscope observation. Watch it here: https://youtu.be/1919DM4z9wg |
AuthorLucian and Anna Maria Archives
August 2026
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