All Materials

35:1 C:N | 1-2 months

Apple peels

35:1 C:N | 1-2 months

Avocado pits

50:1 C:N | 6-12 months

Banana peels

25:1 C:N | 2-4 weeks

Bean shells/pods

25:1 C:N | 1-2 months

Beet tops/greens

15:1 C:N | 2-3 weeks

Berries (spoiled)

30:1 C:N | 1-2 weeks

Bread (stale)

30:1 C:N | 2-4 weeks

Broccoli stalks

20:1 C:N | 1-2 months

Cabbage leaves

12:1 C:N | 2-3 weeks

Cantaloupe rind

30:1 C:N | 1-3 months

Carrot peels

27:1 C:N | 2-4 weeks

Celery scraps

15:1 C:N | 2-3 weeks

Coconut shell

75:1 C:N | 2-3 years

Coffee grounds

20:1 C:N | 2-4 weeks

Coffee filters

200:1 C:N | 2-4 months

Corn cobs

56:1 C:N | 2-4 months

Corn husks

60:1 C:N | 1-2 months

Cucumber peels

15:1 C:N | 1-2 weeks

Eggplant scraps

15:1 C:N | 2-3 weeks

Eggshells

0:1 C:N | 1-3 years

Fruit scraps (general)

35:1 C:N | 2-4 weeks

Ginger root

20:1 C:N | 1-2 months

Grape stems

45:1 C:N | 2-4 months

Green beans

20:1 C:N | 2-3 weeks

Herb stems

15:1 C:N | 2-4 weeks

Kiwi skin

30:1 C:N | 2-4 weeks

Lettuce

12:1 C:N | 1-2 weeks

Mango peels

30:1 C:N | 2-4 weeks

Melon rind

30:1 C:N | 1-3 months

Mushroom scraps

15:1 C:N | 1-2 weeks

Oatmeal

20:1 C:N | 1-2 weeks

Pasta (cooked)

25:1 C:N | 2-4 weeks

Pepper scraps

15:1 C:N | 2-3 weeks

Pineapple crown/core

40:1 C:N | 2-6 months

Potato peels

25:1 C:N | 2-4 weeks

Pumpkin scraps

25:1 C:N | 1-3 months

Radish tops

12:1 C:N | 1-2 weeks

Rice (cooked)

25:1 C:N | 1-3 weeks

Seaweed/kelp

19:1 C:N | 2-4 weeks

Spinach

12:1 C:N | 1-2 weeks

Squash scraps

25:1 C:N | 1-3 months

Sweet potato peels

25:1 C:N | 2-4 weeks

Tea bags

25:1 C:N | 2-4 weeks

Tea leaves (loose)

25:1 C:N | 2-4 weeks

Tomato scraps

18:1 C:N | 2-4 weeks

Vegetable scraps (general)

20:1 C:N | 2-4 weeks

Watermelon rind

30:1 C:N | 1-3 months

Zucchini scraps

15:1 C:N | 2-3 weeks

Stale cereal

25:1 C:N | 1-2 weeks

Flour (old)

25:1 C:N | 1-2 weeks

Moldy bread

30:1 C:N | 1-2 weeks

Tofu (spoiled)

15:1 C:N | 1-2 weeks

Coconut water

0:1 C:N | Immediate

Corn silk

15:1 C:N | 1-2 weeks

Guava scraps

25:1 C:N | 1-3 weeks

Jackfruit scraps

25:1 C:N | 2-4 weeks

Lychee shells

40:1 C:N | 2-4 months

Okra scraps

15:1 C:N | 2-3 weeks

Papaya scraps

25:1 C:N | 1-3 weeks

Passion fruit shells

40:1 C:N | 2-4 months

Persimmon scraps

25:1 C:N | 2-4 weeks

Plantain peels

25:1 C:N | 2-4 weeks

Taro peels

20:1 C:N | 2-4 weeks

Yam peels

25:1 C:N | 2-4 weeks

Cassava peels

20:1 C:N | 2-4 weeks

Sake lees

15:1 C:N | 1-2 weeks

Spent grain (brewing)

15:1 C:N | 1-3 weeks

Lemongrass scraps

30:1 C:N | 1-3 months

Turmeric scraps

20:1 C:N | 2-4 weeks

Cardamom pods

40:1 C:N | 2-4 months

Cinnamon sticks

50:1 C:N | 3-6 months

Vanilla pods (used)

40:1 C:N | 2-4 months

Date pits

50:1 C:N | 1-3 years

Cherry pits

50:1 C:N | 1-3 years

Peach pits

50:1 C:N | 1-3 years

Plum pits

50:1 C:N | 1-3 years

Olive pits

50:1 C:N | 1-3 years

Bamboo shoot waste

20:1 C:N | 2-4 weeks

Expired spices

20:1 C:N | 1-2 weeks

Pomegranate peels

30:1 C:N | 2-4 months

Turnip peels

20:1 C:N | 2-3 weeks

Artichoke leaves

20:1 C:N | 1-3 months

Asparagus ends

15:1 C:N | 2-3 weeks

Avocado flesh

25:1 C:N | 1-2 weeks

Bok choy scraps

12:1 C:N | 1-2 weeks

Cauliflower scraps

20:1 C:N | 2-4 weeks

Kale stems/leaves

15:1 C:N | 2-3 weeks

Leek tops

15:1 C:N | 2-3 weeks

Parsnip peels

25:1 C:N | 2-4 weeks

Fennel scraps

15:1 C:N | 2-3 weeks

Grass clippings

17:1 C:N | 1-4 weeks

Leaves (dry/brown)

60:1 C:N | 2-6 months

Leaves (fresh/green)

25:1 C:N | 2-4 weeks

Pine needles

80:1 C:N | 3-12 months

Hedge trimmings

40:1 C:N | 2-6 months

Flower cuttings

25:1 C:N | 2-4 weeks

Weeds (no seeds)

20:1 C:N | 2-4 weeks

Straw

75:1 C:N | 2-6 months

Hay

25:1 C:N | 1-3 months

Twigs (small)

60:1 C:N | 3-12 months

Algae

10:1 C:N | 1-2 weeks

Corn stalks

60:1 C:N | 2-4 months

Moss

30:1 C:N | 2-4 months

Sunflower stalks

60:1 C:N | 3-6 months

Tomato plants (healthy)

20:1 C:N | 2-4 weeks

Pea vines

15:1 C:N | 2-3 weeks

Bean plants

15:1 C:N | 2-3 weeks

Squash vines

25:1 C:N | 1-3 months

Deadheaded flowers

25:1 C:N | 2-4 weeks

Bamboo leaves

50:1 C:N | 2-4 months

Clover

16:1 C:N | 1-2 weeks

Lawn thatch

50:1 C:N | 2-4 months

Coconut coir

75:1 C:N | 2-6 months

Old potting soil

100:1 C:N | Already decomposed

Chicken manure

7:1 C:N | 2-4 weeks

Horse manure

25:1 C:N | 1-3 months

Cow manure

18:1 C:N | 1-3 months

Rabbit manure

15:1 C:N | 2-4 weeks

Goat manure

20:1 C:N | 1-3 months

Sheep manure

16:1 C:N | 1-3 months

Alfalfa

12:1 C:N | 2-4 weeks

Comfrey leaves

10:1 C:N | 1-2 weeks

Nettles

12:1 C:N | 1-2 weeks

Sugar cane bagasse

50:1 C:N | 2-4 months

Banana leaves

35:1 C:N | 1-3 months

Straw bedding (animal)

75:1 C:N | 2-4 months

Lavender trimmings

25:1 C:N | 2-4 weeks

Rosemary trimmings

35:1 C:N | 2-6 months

Sage trimmings

20:1 C:N | 2-4 weeks

Mint trimmings

15:1 C:N | 1-2 weeks

Rose prunings

40:1 C:N | 3-6 months

Newspaper

175:1 C:N | 2-4 months

Cardboard (corrugated)

350:1 C:N | 3-6 months

Cereal boxes

300:1 C:N | 2-4 months

Paper towels

150:1 C:N | 2-4 weeks

Paper napkins

150:1 C:N | 2-4 weeks

Egg cartons (cardboard)

250:1 C:N | 2-4 months

Paper bags

200:1 C:N | 1-3 months

Tissue paper

150:1 C:N | 2-4 weeks

Toilet paper rolls

250:1 C:N | 2-3 months

Shredded paper

175:1 C:N | 2-4 months

Pizza boxes

250:1 C:N | 2-4 months

Wrapping paper (plain)

200:1 C:N | 2-4 months

Junk mail (non-glossy)

175:1 C:N | 2-4 months

Paper plates (uncoated)

200:1 C:N | 2-4 months

Wood chips

400:1 C:N | 6-24 months

Sawdust (untreated)

325:1 C:N | 4-12 months

Tree bark

120:1 C:N | 6-24 months

Wood shavings

300:1 C:N | 6-18 months

Nut shells

35:1 C:N | 1-3 years

Peanut shells

35:1 C:N | 3-6 months

Pistachio shells

40:1 C:N | 1-3 years

Chestnut shells

40:1 C:N | 6-12 months

Hazelnut shells

40:1 C:N | 6-12 months

Cotton fabric (100%)

100:1 C:N | 2-6 months

Wool scraps (100%)

100:1 C:N | 3-6 months

Dryer lint

100:1 C:N | 2-4 months

Human hair

10:1 C:N | 1-2 years

Pet fur

10:1 C:N | 1-2 years

Nail clippings

10:1 C:N | 1-2 years

Cork (natural)

100:1 C:N | 6-24 months

Matches (wooden)

200:1 C:N | 1-2 months

Toothpicks

200:1 C:N | 2-4 months

Cotton swabs (paper stem)

150:1 C:N | 2-4 months

Cotton balls

100:1 C:N | 1-3 months

Bamboo chopsticks

80:1 C:N | 3-12 months

Burlap/jute fabric

100:1 C:N | 2-6 months

Pencil shavings

200:1 C:N | 1-3 months

Feathers

5:1 C:N | 3-12 months

Natural rope

100:1 C:N | 2-6 months

Houseplant trimmings

20:1 C:N | 2-4 weeks

Dried flowers

40:1 C:N | 1-3 months

Linen fabric (100%)

100:1 C:N | 2-6 months

Aquarium water

0:1 C:N | Immediate

Wine corks

100:1 C:N | 6-24 months

Meat (raw)

0:1 C:N |

Meat (cooked)

0:1 C:N |

Dairy products

0:1 C:N |

Butter/margarine

0:1 C:N |

Cooking oil

0:1 C:N |

Grease/lard

0:1 C:N |

Dog waste

0:1 C:N |

Cat litter/waste

0:1 C:N |

Treated/painted wood

0:1 C:N |

Plywood/particle board

0:1 C:N |

Charcoal briquettes

0:1 C:N |

Coal ash

0:1 C:N |

Glossy paper

0:1 C:N |

Plastic

0:1 C:N |

Styrofoam

0:1 C:N |

Metal

0:1 C:N |

Glass

0:1 C:N |

Synthetic fabric

0:1 C:N |

Rubber (synthetic)

0:1 C:N |

Cigarette butts

0:1 C:N |

Herbicide-treated plants

0:1 C:N |

Diseased plants

0:1 C:N |

Invasive plant roots

0:1 C:N |

Black walnut material

0:1 C:N |

Diapers

0:1 C:N |

Fruit stickers

0:1 C:N |

Adhesive tape

0:1 C:N |

Dryer sheets

0:1 C:N |

Waxed cardboard

0:1 C:N |

Tetra Paks

0:1 C:N |

Human waste

0:1 C:N |

Bones

0:1 C:N | 1-5 years

Blood meal

3:1 C:N | 1-2 weeks

Bone meal

0:1 C:N | 1-6 months

Fireplace ash

0:1 C:N | Immediate

Biodegradable bags

200:1 C:N | 3-6 months

Compostable cutlery

200:1 C:N | 3-12 months

Pumpkin seeds

25:1 C:N | 2-4 weeks

Fish scraps

7:1 C:N | 2-4 weeks

Shellfish shells

0:1 C:N | 1-5 years

Shrimp shells

10:1 C:N | 2-6 months

Bokashi bran

30:1 C:N | 2-4 weeks

Bokashi pre-compost

20:1 C:N | 2-4 weeks

Nut butter (expired)

15:1 C:N | 2-4 weeks

Pickle scraps

20:1 C:N | 2-4 weeks

Stale chips

25:1 C:N | 1-2 weeks

Weeds (with seeds)

20:1 C:N | 2-4 weeks

Wood ash

0:1 C:N | Immediate

Worm bedding (newspaper)

175:1 C:N | 2-4 months

Worm bedding (cardboard)

350:1 C:N | 3-6 months

Worm bedding (coir)

75:1 C:N | 3-6 months

Fruit (worm-safe)

35:1 C:N | 1-2 weeks

Vegetables (worm-safe)

20:1 C:N | 1-2 weeks

Citrus for worms

0:1 C:N |

Onions for worms

0:1 C:N |

Hot peppers for worms

0:1 C:N |

Salty foods for worms

0:1 C:N |

Dairy for worms

0:1 C:N |

Meat for worms

0:1 C:N |

Oils for worms