Composting Worms, Worm Castings, Nightcrawlers and Worm Bins from Acme Worm Farm

worm castings and vermicomposting



Composting Worms Complete the Process

What is vermicomposting?

Vermicomposting, sometimes called worm composting, is the final phase of the composting process, where compost is turned into dirt. This dirt is dominated by soil microorganisms as opposed to compost microorganisms. Ordinary compost needs to be digested by the soil before it gives its full benefit, while worm castings are as plant-ready as you can possibly achieve in a composting system.

Which type of worm is best for vermicomposting?

Eisenia fetida, or red wigglers, are the hardiest, most preferred species of earthworms for composting purposes. Eisenia fetida are very prolific, thrive at high population densities and have voracious appetites. Acme Worm Farm is proud to offer some of the healthiest, hungriest compost worms.


The Worm Factory® Worm Bin

Easily convert your kitchen waste into
nutrient rich compost!

This worm bin works on the principle of upward migration. After the first tray is fed until it is full, a second tray is placed on top. By the time the last tray is full, most of the worms will have left the original tray. The vermicompost in that tray is then dumped out, and the tray moved to the top of the stack.

Each bin comes with coconut coir bedding, lid and manufacturer’s instructions.

terra cotta wormfactory worm binworm factory worm bin
Worm Factory® Worm Bin in Terra Cotta and Black

Be sure to check out our new selection of premium Garden Accessories including:

Wooden Buckets, Barrels, Planters, and Cedar Adirondack lawn furniture and more!

Athena cedar rocking chair

Please do not hesitate to e-mail us if you have any questions.



Compost Worm Pricing: Eisenia fetida

1 lb.........$32

4 lbs........$92

2 lbs........$52

5 lbs........$119

3 lbs........$72

10 lbs.......$225

Shipping to Alaska - please call us for pricing.

All prices include delivery. You will receive your chosen weight in worms - you will not pay for bedding. We guarantee LIVE delivery.

We also carry European Nightcrawlers and Worm Castings


order worms

order worm bins

order supplies

Order online now through our secure server -
we accept credit cards, checks and money orders.

Or place your order by fax or telephone.
Phone#: 520-750-8056 • Fax#: 520-638-6043

Paypal Accepted



  • Home Vermicomposting Page
    Detailed instructions and advice on preparation, care, feeding, maintenance of your composting system.


Acme Worm Farm • 4731 N. Edgebrooke Place • Tucson, AZ 85705 • 520-750-8056