September 14, 2022September 14, 2022 by R. Redworm

Composting Worm Food FAQ

Estimated reading time: 3 minutes

Composting Worm Food FAQ

Many people have questions about what they can and cannot feed their indoor compost worms. Indoor bins are different than outdoor bins because they are tiny ecosystems. You can throw just about any food item in an outdoor bin. However, too much of the wrong thing can kill your whole container, and you have to start from scratch.

Here is our quick-to-browse composting worm food FAQ. If you have questions you think we should add to the list, leave them in the comments below.

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Can worms eat bread?

Yes, but in extreme moderation. If you have a bread end that’s gone a bit moldy, your worms will make quick work of it. Too much bread, or processed food, can upset the worm ecosystem.

Can compost worms eat coffee grounds?

Absolutely. Worms love coffee grounds and can tolerate quite a bit of coffee grounds at each feeding. It is important to note that worms prefer a neutral pH level. While worms can eat a lot of ground, too much can lead to a deadly pH level.

Can compost worms eat ginger?

Yes, in moderation. Ginger has a lot of great anti-microbial properties, which is great for humans. But in large quantities can harm your worm bin. I wouldn’t advise that you add more than one thumb of ginger at any feeding.

Can compost worms eat grapes?

Throw them in!

Can compost worms eat moldy food?

Worms love moldy food! During different times of the year and under different conditions, you will find mold in your worm bin. Mold helps break down food and make it available for your worms.

Can compost worms eat onions?

Worms can eat onions. This is a thing you need to give little thought to in an outdoor bin but should not add too much of in an indoor container. Limit adding onions and garlic to your indoor bin for their pH, smell, and antibacterial properties.

Can compost worms eat pineapple?

In moderation. Worms love the sugar sweetness of pineapple. However, it is VERY acidic. add too much and you can kill off your bin. Adding a small amount will be fine. Monitor how your worms behave.

Can compost worms eat tomatoes?

In moderation. Like citrus and pineapples, worms can eat these items – but they are very acidic. Adding too many onions can raise the pH of your bin and lead to a lot of problems.

Can compost worms eat zucchini?

Absolutely, throw it in the bin!

Can you compost eggshells?

Absolutely. Worms need the grit to eat their food, and eggshells are a great source of grit. Crumble the eggshells by hand, or in an old coffee grinder.

Can compost worms eat a pizza box?

They can probably eat MOST of the pizza box. Cut out any greasy sections and throw in any of the dry cardboard. It’s a good practice not to add salty, oily, or processed foods to your bin.

Can compost worms eat dog poop?

In an outdoor bin, 100%. However, in an indoor bin, it is advised to not feed your worms pet waste. There are a lot of different bacterias in the poop that can overwhelm your worm bin. Plus, the smell.

Do compost worms like asparagus?

They sure do! You may limit this item due to the smell of decomposing asparagus.

Do compost worms like bananas?

They love bananas! Throw a full banana or just the peels in the bin.

Do compost worms like cabbage?

They do! However, cabbage, Brussels sprouts, and potatoes all have a pungent smell as they decompose. Limit feedings heavy in vegetables.

Composting with Red Worms

Composting Worm Food FAQ