Composting Mastery: 7 Keys to Perfect Compost Every Time

The 7 Factors

1. Materials: Greens (grass, veg scraps, coffee grounds) + Browns (leaves, twigs, straw). No meat, oil, diseased plants, pet waste, seeded weeds.
2. Microorganisms: Bacteria, fungi, protozoa, arthropods do the work. Inoculate with garden soil or manure.
3. Nitrogen, Air, Water: Balance feeds microbes. Too much N or water = anaerobic mess. You can’t have too much air.
4. Particle Size: Smaller = faster. Shred/chip materials.
5. Pile Size: Minimum 3×3×3 ft for hot compost. Larger piles may restrict airflow.
6. Moisture & Aeration: Like a wrung-out sponge. Turn in rain; water in drought. Pitchfork is ideal.
7. Temperature & Time: 110–160°F kills pathogens/seeds. Maintain C:N ratio, surface area, moisture, air.

Why Compost?

• Not a complete fertilizer, but releases nutrients slowly.
• Loosens clay; retains water in sand.
• Builds soil structure and life.

Using Finished Compost

• Soil amendment: 2–5 in. mixed in before planting.
• Potting mix: 1 part compost : 2 parts potting soil.
• Mulch: 2–4 in. around veggies/flowers; 5 in. around trees.
• Lawn top-dressing: sifted compost + sand.

Next Level: Aerated Compost Tea

Once you’ve mastered solid compost, brew aerated compost tea—a probiotic elixir that supercharges soil biology and plant health.