By the end of this lesson: you will be able to set a realistic goal for your wormery.

A wormery used to reduce household food waste is managed differently from a breeder bin or a system focused on castings. Trying to make one small bin do everything normally produces muddled decisions.

Choose a primary purpose for each bin:

It can still produce several useful outputs, but one purpose should lead the management decisions.

A Composting Bin:

A composting bin prioritises steady food processing and bedding conversion.

A Castings Bin:

This bin prioritises clean, mature material and predictable harvesting.

A Breeder Bin:

A breeder bin prioritises adult condition, space, cocoons and planned movement of stock.

Top Tip – This will sound silly but from the outside these bins will all likely look the same.  So, make sure you have a method of knowing what is what.  It’s easy to forget.  If you change one from a breeder to a castings bin, you can soon forget what it’s supposed to be.  So, we use different types of bins.

You also need a realistic measure of success. “More worms” is not enough. Useful measures include fewer escapes, an earthy smell, no persistent wet sump, food disappearing steadily, a planned harvest window and a stable weekly routine.

• Household processing: Reduce suitable kitchen waste with minimal fuss.
• Castings production: Produce mature vermicompost for plants or later sale.
• Population growth: Build worm biomass and cocoons for expansion.
• Learning system: Use one bin to test methods before scaling.

Practical task: Write one sentence beginning: “The main purpose of this wormery is…” Repeat this for every bin you operate.