Compost C:N balance
Green/brown material → carbon:nitrogen ratio
Materials
C:N
30:1
Optimal (25–30:1)
Green (C:N~15): grass, kitchen scraps, manure. Brown (C:N~60): leaves, straw, cardboard. Optimum 25–30:1 — fast hot composting without smell. Keep moisture like a wrung sponge, turn weekly.