Why You Should Start Composting Today
Before we get our hands dirty, let's talk about the 'why'. Composting is one of the most impactful things you can do for the environment from home. It drastically reduces the amount of waste sent to overflowing landfills, where organic matter decomposes
anaerobically and releases harmful methane gas. For you, the benefits are more immediate. You create a free, continuous supply of nutrient-rich fertilizer that will make your balcony garden thrive. It saves money, reduces your carbon footprint, and connects you to the natural cycle of decay and growth. It's a win-win for both you and the planet.
Gather Your Simple Materials
You don't need fancy equipment to start. Most of what you need might already be at home or is easily available at a local hardware store. Here’s a basic list: Two Plastic Bins or Buckets: One should be larger than the other. For example, a 75-litre bin and a smaller 20-litre bucket that can nest inside it work well. Ensure the larger bin has a well-fitting lid to keep pests out and odours in. An Electric Drill: To make aeration and drainage holes. A Tray or Trivet: To place under your bin to catch any excess liquid, also known as leachate. Some Soil or Finished Compost: A handful is all you need to introduce the necessary microbes to get the process started.
Step-by-Step: Building Your Balcony Bin
Building your bin will take less than 30 minutes. First, take the larger bin and drill several holes (about 1/8 inch) on the sides for aeration. It's also important to have drainage holes at the bottom to prevent waterlogging. Next, take your smaller bucket, drill holes all over its sides, and then carefully cut off its bottom. This bottomless, perforated bucket will be your core composting chamber. Place a 2-3 inch layer of soil or coco peat at the bottom of the large bin. Then, centre the smaller, bottomless bucket inside it. Your basic structure is now ready. The space between the two containers can even be filled with potting soil to grow plants like herbs or flowers.
The Right Ingredients: 'Greens' and 'Browns'
Successful composting is all about balance. You need a healthy mix of 'greens' (nitrogen-rich materials) and 'browns' (carbon-rich materials). A good rule of thumb is to aim for a ratio of roughly two parts brown to one part green by volume. Greens (Nitrogen): These are your wet, fresh materials. Think fruit and vegetable scraps, coffee grounds, tea leaves, and fresh plant trimmings. Browns (Carbon): These are your dry materials. This includes torn-up cardboard, shredded newspaper, paper egg cartons, dried leaves, twigs, and sawdust. Every time you add fresh kitchen scraps (greens) into the central bucket, be sure to cover them with a layer of browns. This is the most important step to prevent smells and maintain a healthy compost pile.
What to Keep Out of Your Bin
While most kitchen waste is compostable, some items should be avoided in a small balcony bin as they can attract pests and create foul odours. Steer clear of meat, fish, bones, dairy products, and oily or greasy foods. Also avoid adding pet waste or diseased plants, as home compost bins rarely get hot enough to kill the associated pathogens. Large amounts of citrus can make the pile too acidic, so add them sparingly.
Maintaining Your Compost for Success
Your compost bin isn't a 'set it and forget it' project, but the maintenance is minimal. The key is to manage moisture and air. Your pile should feel like a wrung-out sponge—moist, but not dripping wet. If it's too wet and smells bad, add more dry 'browns' like cardboard or leaves and give it a stir. If it's too dry, you can add a little water or more wet 'greens'. Use a small garden fork or a sturdy stick to turn or aerate the contents of the inner bucket once a week. This provides the oxygen that the hardworking microbes need to break everything down efficiently.
Harvesting and Using Your 'Black Gold'
In a few months, depending on your mix of materials and conditions, you'll find a dark, crumbly, soil-like substance at the bottom of your bin. This is your finished compost, often called 'black gold' by gardeners for its immense value. It should smell earthy and pleasant. To harvest, you can simply scoop out the finished material from the bottom. Some people build a small trap door near the base for easier access. Sift out any larger, unfinished pieces and return them to the bin for the next cycle. You can then mix this compost into the soil of your potted plants, use it as a top dressing to slowly release nutrients, or create a potent 'compost tea' by soaking it in water.
