A worm composting windrow is a combination of two different methods piles and worms.
Raising worms in a windrow is a good choice for those who have the space and want to process lots of waste. It will provide massive casting production. But this means you need LOTS of waste and LOTS of worms. A small windrow would be 4 foot by 6 foot and 2 foot high. The worms needed for this size windrow would be 10+ pounds. If you were to buy them in bulk it would still cost you over $100. So cost is a deterant.
The other main deterant is MOLES. One mole family can eat up to 5 pounds of worms in one night. And then they go tell there mole friends and before you know it, your worm population is gone. Some farmers simply line the bottom of the windrow with hardware cloth to deter moles. Other use traps.
I have not as of yet, had the courage to try a windrow. I do plan on trying my first late this spring and will keep the website updated on the progress of the windrow. Start to finish.