Vermicompost is a fancy word for worm poop (or castings, to be more precise and polite). Worms eat all the slimy, furry bacteria, fungi, and other microorganisms that grow in decomposing fruits and vegetables. In turn, the castings are mostly bacteria, fungi, and other organic materials in the form of an odorless soil supplement that feeds plants and retains water in the dirt.
Worms can turn your fruit and vegetable scraps into a good soil improvement mix. You can easily become a worm rancher and grow your own worm compost. You just need garbage, newspapers, worms, and a box.
Where to Get Worms
Compost worms are called Red Wigglers, a different type of worm than a fish-baiting Night Crawler or the earthworms that crawl onto sidewalks after rainstorms. Check your area for a worm farmer who can show you some tricks and sell you some worms. You can also adopt worms from a neighbor with worm compost. The critters multiply quickly, and anyone with worm compost has plenty of worms to share. Otherwise, buy worms online.
How to Make a Worm Compost Bin
1. Prepare your worm house: Drill breathing holes for the worms in the bottom and sides of the container. Put something under the container that allows drainage but captures the liquid. Then add plenty of moist shredded newspaper or cardboard for bedding. Put the worms in with some dirt to make them feel at home.
2. Add food. You can feed worms almost anything that came out of the ground --vegetable peels, apple cores, spoiled vegetables, moldy bread, etc. Just don't put in any vinegar, oils, meat, or bones (egg shells are OK). The best method is "pocket feeding." Mentally divide the container into four or five segments, then bury a small amount of food in one area. Some worm farmers mark the spot with a popsicle stick. Every few days, add food to each successive segment. Hopefully, much of the food will be gone by the time you make it back to the first area. The other method is simply spreading the food on top of the worms, and adding a layer of shredded newspaper.
3. Clear out the compost. Be patient. The worms take a while to make a significant amount of compost. After a couple of months, tip the compost bin onto a plastic sheet under bright sunlight. Pile the compost into a cone and slowly skim off the crumbly dirt-like compost. The worms will dig down away from the light, so you can remove the useful compost and keep your worm farm alive.
4. Finally, feed the compost into the garden to help your vegetables grow. After harvesting the veggies, feed the scraps to the worms and start over again with vermicompost, a great way to help your garden and reuse some of your kitchen garbage.
Photo credit: Steve Graham (that's the author, tending to his worm compost).