Score C: Avoid this in your worm bin

C-rated items

Below is a complete list of items that have earned a Vermicompost Score of C. By avoiding these, you prevent the most common composting problems. Click on any item to learn the specific reason why it is unsuitable for a worm bin.

Coconut

Dairy products

Oily food & sauces

Meat, fish, and bones

Salty or pickled foods

Orange

Glossy paper

Mandarin

Cooked food

Sick plants

Charcoal ash

Dog, cat waste

Nut shells

Peppers

Lime

Cigarette butts and ash

Metals, glass, ceramics

Chemicals

Cardboard with plastic coating

Onions

Grapefruit

Plastics

Sweet Corn

Household dust

Earth, soil and root balls

Lemon

Strongly spiced food

Score A (Ideal)

These materials are readily consumed and break down quickly and easily. They form the ideal primary diet, contributing optimally to healthy, fertile vermicompost. Discover A-rated items such as Apple, kiwi, carrot, cucumber, cardboard, or coffee grounds.

Score B (In moderation)

These materials are generally suitable but require caution with quantity. Adding too much can potentially disturb the bin’s balance, slow processing, or lead to minor issues. Pay attention when adding these. Discover B-rated items such as avocado, mango, tomato, cauliflower, bread, or hard pits.

Frequently asked questions

What is the biggest risk of adding a C-rated item?

I accidentally added something from this list. What should I do?

Why can't I add citrus peels like lemon or lime?

C-rated items

Frequently asked questions

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