Turning Trash to Treasure: Build Your Own Compost Bin from a Trash Can!
Want to turn your kitchen scraps and yard waste into garden gold? You don’t need to spend a fortune! This guide shows you how to easily make a compost bin from an old trash can. It’s cheap, effective, and great for the environment.
Quick Answer: You can easily convert an old trash can into a functional compost bin by drilling ventilation holes, ensuring good drainage, and mixing your green and brown materials properly.
Why Use a Trash Can for Composting?
Composting is a fantastic way to recycle organic waste and create nutrient-rich soil for your garden. But buying a fancy compost bin can be expensive. Using an old trash can is a brilliant solution because:
It’s Budget-Friendly: You’re recycling something you already have! No need to buy a brand-new bin.
It’s Easy to Find: Most households have an old trash can lying around, or you can find one cheap at a garage sale or online marketplace.
It’s the Right Size: Trash cans are usually the perfect size for home composting, not too big and not too small.
It’s Durable: Plastic trash cans are built to withstand the elements, making them ideal for outdoor composting.
- It’s Simple to Modify: You can easily drill holes for aeration and drainage.
Gathering Your Supplies
Before you start building your compost bin, you’ll need a few basic supplies:
An Old Trash Can: A plastic trash can with a lid is ideal. Choose one that’s not cracked or damaged. A dark color is preferable as it will absorb more heat.
Drill: You’ll need a drill to create ventilation and drainage holes.
Drill Bits: Get a drill bit suitable for drilling holes into plastic. A ¼-inch or ⅜-inch bit is a good size for aeration. A ½-inch or ¾-inch is good for drainage.
Gloves: Protect your hands while drilling.
Safety Glasses: Protect your eyes from flying plastic debris.
Measuring Tape or Ruler (Optional): For evenly spacing your holes.
Materials for the Compost: "Green" materials (nitrogen-rich) like grass clippings, vegetable scraps, and coffee grounds, and "brown" materials (carbon-rich) like dried leaves, shredded paper, and twigs.
- Water: To keep the compost moist.
Preparing Your Trash Can
The first step is to prepare your trash can for its new life as a compost bin.
Cleaning the Trash Can
Before you start drilling, thoroughly clean the trash can with soap and water. This will remove any lingering odors or residue. Rinse it well and let it dry completely.
Drilling Ventilation Holes
Ventilation is crucial for healthy composting. Compost needs oxygen to break down properly. Drill holes around the sides of the trash can to allow air to circulate.
Spacing: Space the holes about 6-8 inches apart.
Placement: Drill rows of holes around the sides of the can, starting a few inches from the bottom and going up to near the top.
- Number of Holes: The more holes, the better the aeration. Aim for at least 20-30 holes on a standard-sized trash can.
Drilling Drainage Holes
Drainage is equally important. Excess moisture can lead to anaerobic conditions (lack of oxygen), which causes the compost to smell bad. Drill holes in the bottom of the trash can to allow excess water to drain out.
Placement: Drill several holes evenly spaced across the bottom of the can.
- Number of Holes: At least 5-6 holes are recommended.
Optional: Adding a Lid Latch
If you live in an area with strong winds or curious animals, consider adding a latch to the lid of your compost bin. This will prevent the lid from blowing off or animals from getting into your compost. You can purchase a simple latch at a hardware store and attach it with screws.
Starting Your Compost
Now that your compost bin is ready, it’s time to start composting!
The Green and Brown Ratio
The key to successful composting is maintaining the right balance of "green" and "brown" materials.
Greens: These are nitrogen-rich materials that provide moisture and help the compost decompose quickly. Examples include:
- Grass clippings
- Vegetable scraps
- Fruit scraps
- Coffee grounds
- Tea bags
- Manure (from herbivores like cows, horses, or rabbits)
- Browns: These are carbon-rich materials that provide bulk and aeration. Examples include:
- Dried leaves
- Shredded paper
- Cardboard
- Twigs
- Sawdust (untreated wood only)
- Straw
The ideal ratio is generally considered to be 2:1 or 3:1 browns to greens. Too much green material can make the compost slimy and smelly, while too much brown material can make it dry and slow to decompose.
Layering Your Compost
Start by adding a layer of brown materials to the bottom of your compost bin. This will help with drainage and aeration. Then, add a layer of green materials. Continue layering, alternating between browns and greens.
Chop It Up: Chop larger materials into smaller pieces. This will help them break down faster.
- Mix It Up: After adding a layer of materials, mix it up with a shovel or garden fork. This will help to aerate the compost and distribute the moisture evenly.
Maintaining Moisture
Compost needs to be moist like a wrung-out sponge. If it’s too dry, the decomposition process will slow down. If it’s too wet, it will become anaerobic and smelly.
Watering: Add water to your compost bin as needed to keep it moist. Use a watering can or a hose with a gentle spray.
- Checking Moisture: To check the moisture level, squeeze a handful of compost. It should feel damp, but not dripping wet.
Turning Your Compost
Turning your compost regularly is essential for aeration and even decomposition.
Frequency: Turn your compost every week or two.
How to Turn: Use a shovel or garden fork to turn the compost, mixing the materials from the bottom to the top.
- Benefits of Turning: Turning your compost will speed up the decomposition process and help to create a more uniform compost.
Troubleshooting Common Problems
Even with the best intentions, you might encounter some problems when composting. Here are some common issues and how to fix them:
Smelly Compost: This usually indicates anaerobic conditions (lack of oxygen). Turn the compost more frequently and add more brown materials to improve aeration. Make sure there are adequate drainage holes at the bottom of the bin.
Dry Compost: Add water to moisten the compost.
Slow Decomposition: Make sure you have the right balance of green and brown materials. Chop materials into smaller pieces and turn the compost regularly.
Pests: Cover food scraps with brown materials to deter flies and other pests. Make sure your compost bin has a lid to prevent animals from getting in.
- Too Many Flies Flies will come around because they are attracted to open compost and its easy food source. To avoid the increase in flies, cover your wet food scraps well with browns like dry leaves or shredded paper to avoid attracting them.
Harvesting Your Compost
After a few months, your compost will be ready to harvest.
Signs of Ready Compost
- The compost will be dark brown and crumbly.
- You won’t be able to recognize the original materials.
- It will have a earthy smell.
How to Harvest
Use a shovel or garden fork to remove the finished compost from the bottom of the bin. You can use a screen or sifter to remove any larger pieces of undecomposed material.
Using Your Compost
Use your finished compost to enrich your garden soil, amend potting mixes, or create compost tea. Compost is a fantastic way to improve soil health and provide nutrients for your plants.
Where to Place Your Compost Bin
Choosing the right location for your compost bin is important for both convenience and effectiveness.
Accessibility: Place the bin in a convenient location, close to your garden and kitchen. This will make it easier to add materials and harvest the finished compost.
Sunlight: Some sun exposure is beneficial, as it helps to warm the compost and speed up decomposition. However, too much sun can dry out the compost. A partially shaded location is ideal.
Drainage: Choose a location with good drainage to prevent water from pooling around the compost bin.
Level Ground: Place the bin on level ground to prevent it from tipping over.
- Away from Structures: Keep the bin away from your house or other structures to avoid attracting pests or creating unpleasant odors.
Making Compost Tea
Compost tea is a liquid fertilizer made by steeping compost in water. It’s a great way to add nutrients to your plants and improve soil health.
How to Make Compost Tea
- Fill a bucket with water.
- Place a handful of compost in a burlap sack or cheesecloth.
- Submerge the sack of compost in the water.
- Let it steep for 24-48 hours, stirring occasionally.
- Remove the sack of compost.
- Dilute the compost tea with water (1 part tea to 10 parts water).
- Use the diluted tea to water your plants.
Benefits of Compost Tea
- Provides nutrients to plants
- Improves soil health
- Increases disease resistance
- Enhances plant growth
Benefits of Composting
Composting isn’t just good for your garden; it’s good for the environment too!
Reduces Landfill Waste: Composting diverts organic waste from landfills, reducing greenhouse gas emissions.
Enriches Soil: Compost improves soil structure, water retention, and nutrient content.
Reduces the Need for Chemical Fertilizers: Compost provides a natural source of nutrients for plants, reducing the need for synthetic fertilizers.
Conserves Water: Compost improves soil water retention, reducing the need for watering.
- Supports Sustainable Gardening: Composting is a key component of sustainable gardening practices.
FAQ About Trash Can Composting
Q: Will my compost bin smell bad?
A: A properly maintained compost bin shouldn’t smell bad. A foul odor usually indicates anaerobic conditions. Ensure adequate ventilation by turning the compost regularly and adding more brown materials.
Q: What shouldn’t I put in my compost bin?
A: Avoid adding meat, dairy, oily foods, diseased plants, pet waste, or treated wood to your compost bin. These materials can attract pests, create unpleasant odors, or contaminate the compost.
Q: How long does it take to make compost?
A: The composting process can take anywhere from a few months to a year, depending on factors such as temperature, moisture, aeration, and the types of materials you’re composting. Turning the pile regularly and maintaining the right moisture balance will speed up the process.
Q: Can I compost in the winter?
A: Yes, you can compost in the winter, but the process will be slower due to the colder temperatures. Insulate your compost bin by wrapping it in straw or hay. Continue to add materials as usual, but be aware that decomposition will be slower until the weather warms up.
Q: What if my compost is attracting pests?
A: Make sure to cover food scraps with brown materials to deter flies and other pests. Ensure your compost bin has a secure lid to prevent animals from getting in. If pests are a persistent problem, consider using a compost bin with a screen or enclosed design.
Q: How do I know if my compost is ready to use?
A: Finished compost will be dark brown and crumbly with an earthy smell. The original materials will no longer be recognizable. You can also perform a simple test by planting a few seeds in a small amount of compost. If the seeds germinate and grow, the compost is ready to use.
Conclusion
Building a compost bin from an old trash can is a simple, affordable, and eco-friendly way to start composting. By following these steps, you can turn your kitchen scraps and yard waste into valuable compost for your garden. So, get started today and enjoy the benefits of composting!
