Worm Composting: How to Make a Wormery


Photo by GettyImages/sirichai_asawalapsakul

Wormeries use special composting worms to convert kitchen waste into nutrient-rich compost and liquid fertilizer. They’re odorless and take up less space than a traditional compost pile, making them a great composting solution for small gardens or as a complement to your existing compost pile.

Make a Wormery 

We’re creating a wormery with three compartments. The bottom compartment collects the liquid, which can be drained and mixed with water to use as fertilizer. The worms live in the top compartment and this is where you’ll feed them with kitchen scraps. This is also where your compost (worm castings) will be made. The third compartment makes it easier to collect the worm compost without disturbing the worms. Holes in the bottom of the middle and top trays insure that any liquid produced by the worms can drain down into the collection tray at the bottom, and enable worms to migrate up into a new tray once the other is full. A lid prevents the wormery from drying out or flooding with rainwater.

The trays we’re using are 16x20in and just 8in deep. You’ll also need a plastic faucet, a drill and drill bits.

Don’t use worms from the garden as they’re not as good at composting as specific composting worms, which you can order online.

Building Your Wormery 

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