Composting turns yard and kitchen waste into a dark, crumbly soil amendment that can improve structure, water-holding capacity, and organic matter in garden beds.
You do not need an expensive system. A simple pile or bin can work well if you balance carbon-rich and nitrogen-rich materials, keep the pile moist, and allow enough air for decomposition.
Use a Mix of Browns and Greens
Dry leaves, shredded cardboard, and small woody material provide carbon. Fresh grass clippings, vegetable scraps, and other green plant material provide more nitrogen. The U.S. Environmental Protection Agency’s home composting guide explains what to compost and how to manage moisture and aeration.
Skip Meat, Grease, and Problem Materials
Backyard piles should generally avoid meat, bones, dairy, grease, pet waste, and diseased plant material unless you are using a system designed to handle them safely. These materials can create odors or attract animals.
Keep the Pile Moist and Aerated
The pile should feel damp like a wrung-out sponge, not saturated. Turning or mixing helps introduce oxygen and can speed decomposition. If the pile smells sour or rotten, it may be too wet or short on air.
Know When Compost Is Finished
Finished compost is dark, crumbly, and earthy-smelling, and the original ingredients are difficult to recognize. Let unfinished material continue decomposing before mixing it around plant roots.
Use Compost in Moderation
More compost is not always better. Large repeated applications can raise nutrients or salts beyond what plants need. Our organic gardening guide explains how compost fits into a broader soil-health plan.
Add Compost to Raised Beds Carefully
Compost is useful in raised beds, but it should usually be part of a balanced soil mix rather than the entire root zone. Our raised-bed filling guide covers soil volume, drainage, and amendment balance.
Use Compost to Support, Not Replace, Fertility Planning
Compost can supply nutrients, but its nutrient content varies widely. Our fertilizer guide explains why soil testing and measured nutrient needs still matter.