Last week we looked at choosing a compost method that fits our household, space, materials, and time. The next step is making sure that method has the conditions it needs to work. Before we build a pile, fill a bin, or start adding scraps, it helps to look at seven things: - Site: Is it accessible, well drained, and suited to the method? - Feedstocks: What materials do we actually have available? - Moisture: Will the materials stay moist enough for decomposition without becoming waterlogged? - Structure: Are there enough coarse materials to keep the mass from collapsing and compacting? - Airflow: Can oxygen move through the material? - Space: Is there enough room for the system and the way we will manage it? - Management: How much checking, watering, turning, or handling can we realistically maintain? These conditions work together. A pile made mostly from wet, dense materials may have plenty of moisture but very little airflow. A loose pile in full summer sun may have good structure but dry out quickly. A method may work perfectly on paper but still be the wrong system if we cannot give it the attention it requires. Weather changes the balance too. Hot, dry conditions may make moisture the limiting factor. Long periods of rain can shift the problem toward saturation and compaction. Cold conditions may simply slow decomposition. So rather than following one calendar recipe, we learn to observe what the system is telling us. Compost performance emerges from the relationship among materials, moisture, air, structure, site, and management. Before you start a compost system, which condition do you think is easiest to overlook?