Worm Food
A quick guide to inputs for your on-farm vermicompost

Are you looking to build your farm’s fertility by making your own worm castings or liquids?
This guide contains some ideas for what resources (worm food) you might be able to find to build up your vermicompost. The best news? Just like this guide, they’re probably free!
There’s plenty of advice out there on what to put in a small backyard worm bin, but different rules apply when you make your vermicompost at scale. This guide allows you to start thinking about whether you have enough material available for farm-scale worm farming to be viable for you.
This guide contains:
- A list of possible inputs with the bulk you will need for your farm-scale system.
- Some factors to consider when you want to use the end product on your farm.
- A list of pre-treatment options to make your materials more suitable for your worms.


Hi! We are Lee Fieldhouse and Kirsty Hughes, the team behind Island Biologicals. We run a commercial worm farm on the mid north coast of NSW, Australia, and this guide is our gift to you.
Lee has 10 years experience in running our continuous flow cast harvest system, which has also taken him on a deep dive into how it all works, from raw input to plants.
Kirsty comes from a career as an environmental educator, and helps to create our online content and courses.
We are both passionate about harnessing the power of earthworms to build soil health and farm fertility, and we hope that you can experience some earthworm magic on your farm!