We have been learning to watch what a compost pile does before deciding what to change. When a pile warms, settles, changes smell, loses recognizable material, or eventually cools, we are seeing the results of processes that are mostly hidden from us. So, who is doing the work? It is tempting to think of the microorganisms in compost as one group of workers that moves into the pile and steadily breaks everything down although the actual process is much more dynamic. A compost pile contains a community of decomposers, and that community changes as the pile changes. At the beginning, fresh materials provide certain kinds of readily available food. Microorganisms suited to those materials and conditions begin using them changing the pile structure. Materials break down, heat may be produced, oxygen and moisture conditions can change, and some of the easier-to-use compounds become less available. Those changes create different conditions for the organisms that come next. This means decomposition is not simply a matter of the same organisms doing the same work until the pile is finished. Different groups become more or less active as the available food and surrounding conditions change. Bacteria and fungi are important primary decomposers, and other organisms participate as well. As decomposition progresses, the community can shift again. In an actively heating pile, organisms adapted to higher temperatures may become more prominent. As the pile cools and matures, organisms suited to cooler conditions return or become more active, and larger organisms may become increasingly noticeable. When we manage moisture, air, materials, structure, and disturbance, we are not simply managing a pile of organic matter, we are changing the habitat in which the decomposer community works. We do not need to memorize every organism to begin understanding this relationship. For now, the important principle is that as the compost pile changes, the decomposer community changes with it.

When roots from neighboring plants grow into the same soil, they are doing more than competing for water and nutrients. Living roots release sugars, organic acids, amino acids, and other compounds into the thin zone of soil around them. These root exudates provide food and signals for bacteria, fungi, and other organisms living around the roots. When the root zones of several plants overlap, their rhizospheres can overlap too. That creates a shared area where roots, microbes, nutrients, water, and plant-produced compounds are all interacting. This may help explain why root overlap is not automatically a problem. A biologically active shared root zone may support nutrient cycling and other useful plant-microbe relationships. But we should not make the opposite mistake and assume overlap is always beneficial. The same plants are also drawing resources from that shared soil. The important thing is that root overlap creates interaction, not simply competition. When root zones overlap, plants may share a biologically active rhizosphere as well as compete for resources. The outcome depends on the whole relationship. When you uncover roots from several plants growing together, think beyond where the roots are. What might be happening in the living soil between them? Two neighboring plants have roots occupying the same soil and both are contributing root exudates there. What is the strongest conclusion?

My first ever book launches today https://link.amazon/B01op6i8E

One of my favourite jobs in September is taking cuttings from hedge and shrub trimmings, people often discard this valuable resource.

A lot of the skills our grandparents considered normal are becoming uncommon. The School of Traditional Skills Summit, October 12–16, is bringing many of them back together in one place, including gardening, living soil, sourdough, food preservation, herbs, livestock, and perennial food systems. What I like about it is that you do not have to become a full-time homesteader. Learn one skill, practice it at home, and you become a little less dependent and a little more capable. Might be worth checking out. https://schooloftraditionalskills.com/summit-2026-info/?_ef_transaction_id=12aec7c1ceb047b4b5f6ddb5494b16ed