Start a Fall Compost Pile

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Fall is a solid time to start composting with leaves and garden waste. You can build a pile now that's ready by spring, or let it cure over the season. Sources have mixed views on bin choices and how fast you need to turn the pile, so this approach gives you options that work.

What you need

• Leaves
• Green waste
• Manure (chicken, rabbit, or other)
• Twigs or straw
• Old compost residue

Steps

1. Lay down twigs or straw to create a solid base. This coarse material supports airflow and structure.
2. Add a 6-inch layer of leaves followed by a 2-inch layer of green waste. Aim for a 2:1 ratio of brown to green materials. You can use manure for nitrogen instead of some green waste.
3. Include spent plants to help interrupt pest survival and manage garden diseases. Check for weeds and grass with seed heads before adding them.
4. You can collect leaves and let them weather until needed. Thin or small leaves break down faster this way.
5. Keep adding material to make a large heap. Size helps with heat and moisture retention. Turn the pile every three weeks to introduce air. Maintain moisture between 40 and 65 percent; it should be moist but not soggy.
6. Watch the temperature to ensure proper decomposition. Some sources say turning regularly is essential, while others note that skipping turns just slows things down. Every three weeks is a solid rhythm to speed up the process.
7. Compost takes 5 to 8 months to decompose. You can let it cure in a semi-dry state through spring for better quality, or use it sooner if you've been turning. Sources split on this timing, so choose based on your needs.

Notes

Old compost residue in a container can act as inoculum to jumpstart new batches. Some people find dirty containers helpful for this reason.

Why it works

Why the structure works

A large heap holds heat and moisture better, which speeds decomposition. Turning brings oxygen that microbes need. Weathering leaves breaks down tough tissues. Adding nitrogen from manure or green waste balances the carbon in leaves. Composting spent plants can help break pest and disease cycles.

Related on Landscaping Bible: Mulching Garden Beds: Depth and Material Choices, How to Create a Native Pollinator Garden in Fall, How to Winterize Your Lawn with Late-Fall Fertilizer, How to Start a Small-Space Container Garden.

If it goes wrong

Moisture and seed issues

If moisture drops, add water to stay within the 40 to 65 percent range. Poor moisture can lead to anaerobic conditions. If you're concerned about spreading weeds, leave out grass and weeds with seed heads.