Urban Worm Farm Bag

Urban Worm Farm Bag

The Urban Worm Bag is a continuous flow worm farm in a breathable fabric bag. Feed scraps and bedding in the top, harvest finished worm castings from the bottom.

At a glance

• Type: worm farm (continuous flow, fabric)
• Size: 70 cm long by 70 cm wide by 79 cm high
• Use for: turning kitchen scraps and garden waste into worm castings at home
• Harvest: from the removable bottom via buckles, velcro and a drawstring

What it is

The bag hangs in a frame and the worms live inside it. The fabric breathes, which keeps the compost aerobic. Bedding and food go in at the top; castings are collected from the bottom, so there is no tray swapping.

What it does

• Continuous flow: new material is added on top and the worms work upwards through it, leaving finished castings below.
• Aerobic by design: airflow through the fabric limits the sour, anaerobic conditions that make a worm bin smell.
• Few worms in the harvest: worms move up towards fresh food, so the castings taken from the bottom are mostly worm free.

How to use

• Start with a layer of moist, carbon rich bedding (shredded cardboard, coco coir or aged compost) and add your worms.
• Feed nitrogen rich scraps on top in thin layers, covered with more bedding. Feed again when the last lot is mostly gone.
• To harvest, release the buckles, undo the velcro, loosen the drawstring and let the finished castings drop out of the bottom.
• Use the castings on beds and pots as you would our worm castings.

Handling and storage

• Keep the bag moist but not wet, and out of direct sun and frost. Worms slow down or die outside roughly 10 to 25 degrees Celsius.
• Go easy on citrus, onion, meat and dairy; they sour the bin or attract pests.