Do Worms Really Like Cardboard?


Worms love cardboard because it provides food, shelter, and a moist environment—essential for survival.


Here’s why:

Food Source – Cardboard is not just a packaging material, it’s a rich source of cellulose, which worms (especially composting worms like red wigglers) can break down with the help of microorganisms. The glue in cardboard is often plant-based, making it an additional food source for our wriggly friends.

Moisture Retention – Cardboard effectively retains moisture, creating a humid environment in which worms thrive. Worms respire through their skin, which must remain moist for proper oxygen exchange.


Hiding & Shelter – Worms, like us, love comfortable and protected spaces. Shredded or dampened cardboard provides excellent bedding material in worm bins, creating a cosy environment for worms to thrive.

When cardboard breaks down and begins to decompose, it encourages microbial activity, which is beneficial for vermicomposting. Worms feed on these microorganisms and the material, accelerating the composting process.

Safe & Chemical-Free (if untreated) – Plain, non-glossy, and non-dyed cardboard is a safe addition to worm bins, garden beds or compost heaps and piles, as it doesn’t contain harmful chemicals.



Because of these reasons, many people use shredded cardboard as a key ingredient in vermicomposting bins. To use cardboard effectively, it’s best to shred it into small pieces, dampen it to the consistency of a wrung-out sponge, and mix it with other compost materials in the bin.

Published by Earthly Comforts

The Earthly Comforts blog supports my gardening business.

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