How To Build A Worm Bin

How To Build A Worm Bin

How would you describe the typical suburban homesteader family?  More than likely you’re looking at two parents, a few kids, maybe a dog or a cat, two full-time jobs, soccer practice, ballet recitals…the works!  With that kind of schedule, how are you going to fit in managing livestock on your suburban homestead?  I’ve got the answer for you – worms!  And to raise worms, you’re gonna need a worm bed!

In today’s post, we’re going to explain why you’d want to raise worms and how to build a worm bin.  This information is very similar to what you’d find in Anna Hess’ great book entitled The Weekend Homesteader.  If you don’t already have a copy, I highly recommend you pick one up.  Every suburban homesteader should have one!

Posts may contain affiliate links, which allow me to earn a commission at no extra cost to you. This helps keep costs down so that I can continue providing high quality content to you for free. I appreciate your purchase through the links! (full disclosure)

Why Worms?

Raising worms is all about the quality of the finished product, not necessarily the quantity.  Anna Hess explains it best:

…your worm bin isn’t going to produce gobs of compost…an under-the-sink worm bin will churn out enough nutrients for a potted lemon tree

But, remember that, despite how much (or little) you get in terms of worm output, the quality is super high.  Worm casting a very high in micronutrients and will help your food grow better than just about any other compost available.

Remember that commercial that used to say “A little dab’ll do ya”?  Well, that’s worm castings and tea in a nutshell.  Adding a small amount will show tremendous results to your garden.  That fact alone makes growing worms a worthwhile endeavor for the suburban homesteader.

Gathering Your Supplies

There’s nothing particular outrageous required to make a worm bin.  You’ll need the following:

Plastic Storage Bins

The Plastic Storage bins should be somewhere in the 8-10 gallon range and can usually be found for around $5 a piece.  Make sure both of the ones you are using are the same size.

Sheet of Cardboard

The sheet of cardboard needs to be big enough to cover the top of one of the bins.

Bedding

Worms love shredded newspaper for bedding.  If you have a shredder that creates strips, you’re all set.  The cross-shredders cut the paper into pieces that are too small.  In the absence of shredded newspaper, you can use hand-shredded paper, torn-up cardboard or egg cartons, fallen leaves, straw, coconut coir and peat moss.  Each of these have their downfalls, mostly that they’ll mat down in the bin too much when they get wet.

Worms

Let me say this very simple – we’re not raising earthworms.  Compost worms are known as red wrigglers, redworms or Eisenia fetida.  You might be able to find these guys living in horse manure, but you’re more than likely going to have to purchase them.  You can find some on Amazon.com or at Vermicomposters.com.  You’ll want about 2 lbs of worms for your bin, but could start with 1 lbs and let them grow to fill the space.

Soil

Nothing special here – a few scoops from your garden thrown into the bin to help the worms grind up their food.

Making The Worm Bin

This process is incredibly easy and even those of you who are mechanically challenged can do this project.  Here we go:

  1. Soak your bedding in water for a few hours.  It needs to be soaked, but not dripping.
  2. While the bedding is soaking, use the drill and drill bit to put about 10 holes in the cover and about 8-10 holes in each wall of one of the containers.  The bottom of the container should have about 20 holes.  You can use the ruler and marker, like I would, to put the holes in a nice, equally space pattern or simply do it by eye.  Either way, you want a fairly even distribution of holes across each face.
  3. Place the bin with the holes inside the bin without any holes.
  4. Place the saturated bedding in the bin with the holes and add your soil.  Mix well.
  5. Use the scissors to cut the cardboard so it sits flush with the top of the bedding.  This addition will keep the worms dark and moist.
  6. Pour the worms in (including any bedding they came with) and replace the cardboard.
  7. Place the plastic lid on top and your done!

Caring For Your Worms

Much like any livestock, worms do take a little bit of work to care for.  But, unlike most livestock, they’re not going to require daily attention.

Feeding

You’ll want to let the worms settle for a few days after you finish building the worm bin.  At that point, you can add food scraps on a schedule that works for you – daily, weekly, whatever.  Just make sure you are placing the scraps in different areas of the bin to promote the worms moving around.  You can feed them just about anything you eat, although you’ll want to avoid citrus peels, bread, meat and oil.  Citrus can be toxic in larger quantities.  Likewise, bread, meat and oil will increase your chances of a pungent smell.  Make sure you add a handful of fresh bedding eat time you feed them to cover up the scraps and keep the chance of smell and fruit flies down.

Overfeeding

Overfeeding is the biggest cause of worm bin failure.  On a daily basis, a pound of worms can process roughly one-half pound of food scraps.  That means your two-pound of worms can handle about seven pounds of food scraps per week.  Anything above that should make its way to your compost pile.  You do have a compost pile, right?

Bedding

The only care you need to give your worms besides feeding them is keeping their bedding moist, but not sopping wet.  Likewise, you might find your bin is too dry.  Either way, the way to tell something is wrong in your worm bin is to see how many worms are escaping to the lower bin.  A few worms showing up there every week is normal.  Anything more than that and you’ll need to investigate your worm bin’s conditions and see if you need to add moisture or dry bedding to reduce moisture.

As mentioned previously, stink and fruit flies can also be a problem.  But, in the end, almost every worm bin problem can be treated by adding new layers of bedding (moist or dry, depending on your problem) and never having food scraps above the bedding.  Reducing or stopping feeding for a few weeks during this process also helps.

Harvesting Tea and Castings

Harvesting worm bin tea is super easy.  Simply remove the inner container and pour the worm bin tea from the outer container into a third container.  Replace the inner container and you’re done.  Now you can apply the worm bin tea to your favorite plants for a quick boost of fertilizer.

It’s time to harvest the castings when the contents of the inner container begin to look more like compost and less like bedding and food scraps.  Get a third container, drill holes in it like described above, place some fresh bedding and food scraps in it and then place this new container on top of the original inner container.  Place the cardboard and lid on top of this new, third container.  The worms will work their way into the new bin over a week or two.

When applying the casting to your garden, remember the following:

  • Your soil should be made of no more than 20% castings
  • Casting are best used in your vegetable garden
  • Castings should be used when fresh and damp

Conclusion

Building a worm bin is an easy task that will result in big returns on your suburban homestead.  You’ll have a recycling center right in your house, as well as a compost creator and a fertilization machine.  Your return on investment is terrific with this project so get after it!

Let us know in the comments how this worked out for you!



How To Build A Worm Bin

photo credit: AxsDeny via photopin cc

How To Build A Worm Bin

A chronicle of improvements on the Suburban Homestead based upon the book The Weekend Homesteader by Anna Hess

  1. The Weekend Homesteader Review
  2. Project TWH – Overview
  3. April Preview – Project TWH
  4. Finding Room To Homestead
  5. Suburban Homestead Site Survey
  6. Plan Your Summer Garden
  7. Kill Mulch – Finally Getting Your Hands Dirty!
  8. May Preview – Project TWH
  9. Plant Your Summer Garden
  10. Nutrition For The Suburban Homesteader
  11. Mulch and Your Suburban Homestead
  12. Teamwork On The Suburban Homestead
  13. June Preview – Project TWH
  14. Compost On Your Suburban Homestead
  15. How To Build A Worm Bin
  16. Seasonings: Stepping Up Your Culinary Preps
Liked it? Take a second to support Suburban Steader on Patreon!
Dan on FacebookDan on GoogleDan on PinterestDan on RssDan on TwitterDan on Youtube
Dan
Founder/Owner at Suburban Steader
I am a middle-age guy with a wife, two young kids and a crazy dog. We live on Long Island, NY and had an interesting experience with Hurricane Sandy. That experience led me towards the self-sufficiency movement and eventually led to the founding of SuburbanSteader.com. I aim to provide suburbanites with the confidence and know-how to become more self-reliant by providing content on topics such as gardening, personal health, financial responsibility, cooking, self-preparedness and self-protection.
6 Comments:
  1. I’m a bit confused about the third bin. Shouldn’t it go in between the original outer container and inner container so the worms can work their way down into it? How are the worms going to work their way up?

    • Denise – it does seem a bit counterintuitive, but I have seen it work. If the new (third) holey bin is directly on top of the compost, the worms will find there way up through the holes. The other approach I’ve seen work well is clumping all the compost to one side of the container and put fresh bedding in the other side. Over 2-3 weeks, the worms will work their way from the compost side to the fresh bedding side and you can harvest the compost at that point.

      Please let me know if you have any other questions!

  2. Where do you keep yours in the winter? Will they stay warm enough if they are outside (I am in the NE).

    • Kara – I live in the Northeast as well (Long Island, to be specific). Due to that fact, I’ve never left the bin outside over winter so I don’t know how they would fair. Typically, I put the bin under the sink (wife isn’t a huge fan of that approach, even though there’s not much/any smell) or in the basement. The key is to put it in a location you walk by regularly so you remember to feed the worms and look in on them.

      Does anyone else have experience overwintering worm bins outside? Let us know!

      • We have a large bin of red wigglers and it stays outside in the winter. We sometimes get below freezing temperatures and occasionally the outside layer will freeze. The bin is so large that the worms in the middle do fine. We have had this worm bin for over ten years and the worms do great in it!

        • Jeani – thanks so much for the tips on how you keep the worms outside. I’m tempted to start a new pot this fall and see if I can get a group to survive outside this winter.

  3. 4 Pings:
  4. Pingback: How To Build A Worm Bin - Prepared Bloggers

  5. Pingback: Under The Sink Kitchen Composter | Suburban Steader

  6. Pingback: 21 Prepper Skills You Can Improve This Weekend

  7. Pingback: 7 Prepping Skills Your Kids Can Learn Today | Suburban Steader

%d bloggers like this: