Make a Worm Composter for Less than Five Bucks 80


Apartment dwellers and urbanites often lament the lack of options for composting in homes with limited yard space. If you’re not the kind to get all squirmy over worms in your house, I highly recommend worm composting as a method for dealing with your kitchen waste. You can buy ready-made worm bins, but if you’re even a little bit handy and have access to a drill you can make one yourself for under $5.

CLICK HERE to Pin this projectIt's easy. The don't stink (promise). And they wiggle. Why wouldn't you??

Get started with worm composting

Here’s what you’ll need:

  • 2 nesting buckets (or three; see note at end of post)
  • 1 bucket lid
  • a drill fit with an 1/8″ (or so) bit (like this)
  • newspaper
  • worms (You’ll need red wigglers for this; if you have a friend with worms see if you can have a handful. Otherwise, you may need to buy some, which will put your expenses up over $20 – still less than a ready-made bin.)



My buckets came from the local bakery and cost me $2 a piece. These used to hold eggs – doubtful that those were local.

Drill holes in the bottom of one of the buckets.

Shred newspaper and place it in the perforated bucket. Aim for a 6″ depth.

 

Thoroughly wet the newspaper and allow to drain for a moment.

Add about 2-3 cups of kitchen waste. What you see here is the unfortunate result of a refrigerator spill that I didn’t notice in time to prevent rotting: several small sweet potatoes, an apple, and a bunch of green onions.

Find a chicken helper.

Get your worms. These came out of my already established worm bin.

Put the worms on the kitchen waste.

Close up. Don’t they look happy?

 

Pull the damp newspaper over the top of the scraps and worms. Tuck them in, if you will.

Put the bucket with the worms inside the second bucket and put on the lid. The bottom bucket serves the purpose of catching any liquid.

Project complete in half an hour!

A worm bin of this size is best suited to a single person or couple. Larger households will generate more waste than this size bin can handle. Simply use the same method with larger containers, such as these totes.

While your bin is getting established, don’t overdo it on adding waste. Add 2-3 cups or so every couple of weeks. Once a brown base develops under the paper (this is the worm castings, or worm poop), you should be able to add more. The worms will multiply based on how much food is made available to them.

This bin takes up about a square foot of space and could fit under the sink. And I promise. If you’re doing it right, it does not stink.

Note: When the bucket begins to get full, you can add a second perforated bucket. Just add moist newspaper and scraps like you did during set up, and add it to the stack. Make sure the top bucket is resting on the waste in the bucket below. The worms will slowly migrate up and after a few weeks you can simply pull out the middle bucket and use the rich worm castings on your potted plants.

To harvest the castings without adding a second bucket, dump the contents into a large piece of cardboard. The worms will move down into the castings and away from the light. Skim off the top layer, wait a few minutes for the worms to move deeper, and skim some more. Continue until you have harvested most of the castings, then put the worms back in the bin with fresh scraps and top it off with damp newspaper.

UPDATE: As Carolyn noted in the comments below, if you don’t plan to make this for under the sink or in a closet (where it’s dark), either use an opaque container or throw an old blanket or tarp over your container to keep the worms’ in the dark.


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80 thoughts on “Make a Worm Composter for Less than Five Bucks

  • Sonia

    What an easy and neat way to have a vermiculture system! Mahalo, Kris!

    • ncjettech

      Any fishing supply store sells earthworms… fairly cheap also… 

      • Jane

        You actually need red wiggler worms. The ones in the fishing stores usually aren’t the same kind. At least I have never seen red wigglers in the fishing stores.

        • Tiffanie

          Go outside and dig up the worms, the world if full of them.

          • Kris Bordessa Post author

            It certainly won’t hurt to try, but garden worms like to burrow whereas red wigglers are content to stay in tight quarters.

  • Melanie Haiiken

    My daughter went off to college in Portland and came home committed to organic gardening, and she started worm composting in her dorm. I’ll show her this post and see if she wants to implement this here at our house, thanks for the plan!

    • Kris Bordessa Post author

      My son is off to college and utterly disturbed to not be composting. I suggested this plan to him, too!

  • Carolyn

    Hi Kris,
    That’s a great idea, but with the buckets being translucent, I hope you’re keeping them in a dark closet. As you know, worms hate light more than onions. That’s why opaque bins or totes are recommended. If they are under any kind of stress caused by light, they will hunker down in the middle while leaving the lighted areas alone (as far as feeding goes).

  • Liana

    Thanks for the worms and great post! It’s a little weird how excited I am. Over worms.

    • Kris Bordessa Post author

      I’ll only worry when you start naming them.

  • Sheryl

    So interesting. Forwarding this to a friend, a former rural-dweller, now an urban-dweller. She will be so happy to find a solution to missing her composting!

  • Kris Bordessa Post author

    Sheryl, this can definitely fulfill that need to compost in small space situations. I hope she tries it!

  • kgwaite

    I’ve got three of these (Rubbermaid totes) in my back yard and I swear they do a much better job than a traditional composter. I had my sixth grade class do this as a project two years ago and we even made the news – It’s really a great project.

  • belleame

    does it need to be a certain kind of plastic? or can you use any type of tub?

      • Michael

        If you’re keeping your bins outdoors, look for tubs meant to be outside — like small trashcans. I bought some bins that I get compost and manure in from local farms and they get brittle very quickly if they are exposed to sunlight.

  • Rachel

    I would love to try this! But on a slightly larger scale as there are 4 of us …. my question is, What should I not put in there ? (New to composting )

    • Kris Bordessa Post author

      Avoid adding meat — it’ll get stinky.

    • Penny

      I use a Rubbermaid 3 gallon container (with lid) sitting on a tray (to catch stray worm escapees). The setup sits on top of the recycling bins in the kitchen. Don’t feed onions, citrus or fruit, or meat/protein scraps. (You can feed fruit if you like those nasty little fruit flies flying around the kitchen – I don’t.) I cut up the food as fine as I can with a sharp knife. And yes, they do like those slimy things from the back of the crisper drawer.
      If you have Freecycle or Nextdoor Neighborhood in your area you could try asking for surplus worms from an existing vermicomposter. For example, I started with a cup of worms less than 2 years ago and have now raised enough to start off 6 bins for other people. And very soon I’ll have to split off another batch of worms.

      • Kris Bordessa Post author

        I’ve passed many worms on to new homes! (I never bother with cutting up the things I throw to them, though!)

  • Deborah

    I would love to do this.   I live in Phoenix and am wondering if I should keep this inside uear round or if cooler months if it could go into an outdoor shed?

    • Kris Bordessa Post author

      Mine are outside, year round in a temperate climate. You just want to keep them from the extremes – super hot weather and freezing cold.

    • Pam

      I keep mine in the garage (unheated) all winter. As long as it doesn’t freeze they are fine.

  • Carolyn

    I started one of these about five days ago. Opened the lid to put stuff in today and there was a butterfly on the inside lid! Anybody have any ideas where it came from???

  • David

    Or paint the buckets to create the dark space.

    ** Ask your local bakery for a couple of buckets, they will usually give them to you for free!

  • Laura

    1/8th inch holes are big enough for the worms to move through if you decide to stack buckets?

    • Kris Bordessa Post author

      Should be – they get pretty skinny! If you’re concerned, though, bump it up a size or two.

  • Liana

    So grateful for the red wigglers you gave me a couple years ago. I now have two worm bins and LOVE IT! They go crazy if you grind up their food in a food processor. They multiply prolifically. I have since shared my worms with others, like you did with me. I get all the “juice” out every two weeks, add water and fertilize my plants. MAHALO!

    • Kris Bordessa Post author

      Youʻre so funny. But I get you. They are so nice to have, and Iʻm glad youʻre passing them along!

    • LaFaye

      I’ve had my “worm farm” going for about 2 years. When I do a big vegetable tray and have a lot of veggy waste, I put it in my blender and make “worm slaw.” Then just dig a trench in the worm farm and pour it in. The worms go crazy because it is so easy for them to eat. I found it so much easier to do this than to try to bury the pile. I use wet peat moss instead of newspapers. Then I can just mix it with potting soil or regular ground soil. I have mine in 4″ deep totes. It gives me plenty of room to bury coffee grounds, egg shells, and veggy scraps, really anything besides meat or meat products . The down side, of using this size tote, is lifting to get to the bottom tote.

      • Kris Bordessa Post author

        “Worm slaw.” Love it.

      • Joan Bloom

        Peat moss sequesters carbon, which is released into the air when used in the garden, contributing to climate change. It is harvested from beat bogs, very cheap to harvest, cheap to buy, but each of those bogs supports enormous amounts of critters that lose their homes when the peat moss is harvested. The shipping from where it is harvested to your local garden store also contributes to climate change. So using peat moss contributes to climate change in three huge ways.

        Please, please, do not use peat moss in your gardens, for anything. Or in anything. I have stopped buying potting soil that contains peat moss for this reason. I learned this when making a cranberry bed, which recommended lots of peat moss to create a bog like environment. My research led me to use coconut coir to hold the moisture. Along with other recommended nutrients, I added mycorrhizal fungi, which peat moss has but coir doesn’t.

  • Monica

    Do you have to empty the liquid from the bottom bucket? Does the system get dirty after a while? I imagine creating a big mess when taking the top bucket off to empty the bottom bucket.

    • Kris Bordessa Post author

      If itʻs working, the active bucket should be just moist, not sopping. You just lift it out of the lower bucket, set it on a piece of newspaper and empty the lower bucket – hopefully into a watering can where you can dilute it (I use *roughly 1 cup of worm juice to a gallon or so of water) and use it to feed your garden.

  • Cynthia

    Can the bucket live outside? I live in a small apartment in Georgia. The winters are not ridiculous, but I’d imagine still colder than worms would prefer. How tolerant are they?

    • Kris Bordessa Post author

      I’ve had mine outside in Northern California winters with lows of 14 degrees.

  • Christine Dollar

    check out unclejimswormfarm.com. I’ve bought mealworms to raise for my chickens and will be getting my wigglers from them as well.

  • Jasbir @jasbeeray

    Great post. I.started with my DIY compost bin about 2 months back and used pots (plants’ pot) because I don’t own a drill & and these already came with 3 holes! Set it on a pot holder and left it out in my garden. Been adding my raw (no meat) waste to it without any worms and discovered it has fungus and would like substance growing on it 🙁 I live in a tropical climate. The only extreme weather is heavy thunderstorm but mine bin is covered. Am I doing it wrong? Can I buy and add some wriggly worms to it now or do I need to start fresh?
    Thank you

    • Kris Bordessa Post author

      Fungus and mold are all part of the breakdown process. Hard to say without looking at it, but I think you could add worms now.

  • mothersun

    What do you mean by “find a chicken helper”?

    • Kris Bordessa Post author

      Oh, I was kidding – see the chicken in that photo? 😉

  • Lesley S

    I can’t wait to do this I live in a small older trailer so space is tight

  • Debbie

    what do you mean by “get a chicken helper”?

  • Pam

    I live in Ohio would it work to put the bin in the garage in the winter or will that even be to cold?

    • Kris Bordessa Post author

      You want to keep them above 40 degrees or they’ll die.

  • Amy

    I have been wanting to start composting and to find something useful to do with all of my empty tidy cat containers. Now I have the solution to both! Thank you!

  • Linda

    I may have missed it, but are holes drilled in the bottom of the top/second container also?

  • Melissa

    I love the idea….however, are there any alternatives for containers. Plastic leaches nasty chemicals into your compost making it unusable.

    • Kris Bordessa Post author

      They’re not food grade, no.

  • susan

    Hey, I just made one, but you don’t say anything about letting oxygen into the bins. Should I drill a hole into the top?

  • wolfryder

    Could i use the tall plastic cat litter containers? I usually get litter in cardboard boxes, but will get a few plastic ones for composting

  • Autumn

    Thank you for sharing your knowledge for free. What love! 🙂
    I can’t wait to do this. So how about giving the worms some old leftover great bean casserole? Do they eat the newspaper too? Do I lift up the newspaper when adding more kitchen scraps and put the scraps directly on worms/castings? I am brand new to composting. Everyone is mentioning digging trenches and getting the scraps down to the worms. Thx for taking the time to post this and for answering our questions.

    • Kris Bordessa Post author

      Yes, they eventually eat the newspaper, too. Amazing. And yes, just lift the paper and tuck your kitchen scraps right onto the waste.

    • Kris Bordessa Post author

      Usually the wet newspaper is just used at the start. It will last for a couple months; by then, the worms will have created a nice “bed” of vermicompost that they’ll hide in. Use newspaper every time you start fresh, though.

  • Kristie Lake

    Worms can’t eat onions, citrus dairy or meats. I’ve had red wigglers for 3 years or better and they are doing quite well. If your going to use them in your vegetable garden don’t feed meat or feces from anything that consumed protein. Chicken, goat, lama, cow or horse would be perfect but you have to smell it too.

  • sue hill

    In the uk your red wiggley worms are called tiger worms and you don’t need to buy them. They live deeper in the soil than regular worms. If you put your buckets outside after you put your kitchen scraps in as they say, ‘if you build it they will come’, if it works here I don’t see why it shouldn’t for you.

  • Sarah

    Question, I eat fruit everyday so I have banana peels, strawberry tops, etc. Do I just drop them in everyday or save them in the fridge and do them once every couple weeks? Also, apple cores and fruits with seeds, can I add those or will a tree grow?? Haha. Thanks!!

    • Kris Bordessa Post author

      You can drop them in as you have them, but be aware that you CAN overwhelm a colony with too much. That said, it’s pretty cool that worm eggs won’t actually hatch until they “know” that there’s enough food available.

  • Josh

    I tried the double and the single bucket method but both scenarios, I couldn’t keep the worms in the buckets. Think I need something air tight.

    • Kris Bordessa Post author

      I suspect that they’re leaving (or trying to) for a reason. Too dry? Too wet? Too hot? I do have an occasional few up at the top of the container, but not mass exodus.

  • Connie Anderson

    How long would it take for a worm hive to produce usable tea and castings? If I were to start the worm bed now, would I be able to feed about 40 plants this season?

    • Kris Bordessa Post author

      It depends on a lot of factors. When you say “this season” I assume spring in the US. My short answer is yes – you’d be able to start pulling castings by then; at least enough to use to brew some worm tea. I watched a presentation the other day and the presenter (with an established system) was harvesting castings in a week. One thing he does to make it move so quickly is to grind everything before giving it to the worms. This way, they process through it faster. So that would be one way to speed up the process to have more for spring!

  • Kayla

    I made this a few months ago because it was the perfect solution to my small apartment. I’ve tried other setups before but they were too small, so everything I did wrong was magnified and I ended up killing the worms. But this is PERFECT. I can have multiple set-ups throughout my apartment. Thank you so much for this!

  • C Garber

    I noticed you only put holes on the bottom of the bucket – the worms are able to survive like this?

    I live in Colombia and want to create something similar using plastic trash cans to put on my balcony. Do I need to drill any holes on the sides of the cans or will the worms survive just fine on the air inside the container?

    • Kris Bordessa Post author

      You could easily add a few holes in the side of the bucket, too, if you like!

  • Danielle

    Do you have to stir the bins every so often? Do the worms take care of that part for you?

    • Kris Bordessa Post author

      The worms do ALL the work! The only time I fiddle with it is to harvest the castings.