Every soil improvement guide says "add compost." Makes it sound like you need to buy bags of the stuff forever. You don't. You can make better compost than anything sold in stores, using waste you're already throwing away.
What Composting Actually Is
Composting is controlled decomposition. Microorganisms break down organic matter into humus — a dark, crumbly, earthy-smelling material that's basically soil superfood. It happens in nature constantly. You're just speeding it up.
What You Need
- A container: Bin, tumbler, or just a pile in a corner of the yard
- Green materials (nitrogen): Kitchen scraps, fresh grass clippings, coffee grounds
- Brown materials (carbon): Dried leaves, cardboard, straw, wood chips
- Water: Damp sponge consistency
- Air: Turn the pile occasionally
That's it. Seriously.
The Ratio That Matters
The magic number is roughly 3:1 browns to greens by volume. Too many greens and the pile gets slimy and smelly. Too many browns and nothing happens — it just sits there.
Don't overthink the ratio. If it smells bad, add more browns. If nothing's decomposing, add more greens and water.
What to Compost
Yes (Greens — Nitrogen)
- Fruit and vegetable scraps
- Coffee grounds and tea bags (remove staples)
- Fresh grass clippings
- Plant trimmings
- Eggshells (crushed — they add calcium)
Yes (Browns — Carbon)
- Dried leaves (the MVP of composting)
- Cardboard and newspaper (shredded)
- Straw and hay
- Wood chips and sawdust (untreated wood only)
- Dryer lint (from natural fabrics)
Never Compost
- Meat, fish, or dairy (attracts pests)
- Diseased plants (spreads disease)
- Pet waste (harmful pathogens)
- Treated or painted wood
- Anything with pesticides or herbicides
Three Methods
Cold Composting (Laziest)
Just pile everything up and wait 6-12 months. Add materials as you get them. Turn occasionally if you remember. Low effort, slow results, but it works.
Hot Composting (Fastest)
Build the pile all at once with the right ratio, keep it moist, and turn it every 3-5 days. The center will reach 130-160°F, killing weed seeds and pathogens. Finished compost in 4-8 weeks.
Tumbler Composting (Tidiest)
A sealed rotating drum. Add scraps, give it a spin every few days. Great for small yards and keeping critters out. Ready in 6-10 weeks.
Troubleshooting
- Smells bad: Too wet or too many greens. Add browns, turn the pile.
- Not decomposing: Too dry or too many browns. Add greens, water lightly.
- Attracting flies: Bury food scraps under browns. Cover with a layer of leaves.
- Pile shrinks but isn't finished: Normal. A pile loses 50-75% of its volume. Keep adding.
How to Know It's Ready
Finished compost is:
- Dark brown to black
- Crumbly texture
- Earthy smell (like a forest floor)
- You can't identify the original materials
- Room temperature (no longer heating up)
Using Your Compost
The best amendment for every soil type:
- Clay soil: Spread 2-3 inches on top in fall. Improves drainage and structure.
- Sandy soil: Mix 3-4 inches into the top 6-8 inches. Improves water retention.
- Silt soil: Use chunky compost to create air pockets and prevent compaction.
- Loam: Annual top-dressing of 1-2 inches maintains perfect conditions.
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