Composting at Home: Turn Kitchen Scraps into Garden Gold

Composting is simply speeding up the process nature uses to recycle plant material. With the right mix of greens, browns, air and moisture, kitchen scraps become a crumbly, sweet-smelling soil amendment in a few months.

The recipe

Compost needs two kinds of material:

• Greens — fresh grass clippings, vegetable peelings, coffee grounds, fresh plant trimmings. These supply nitrogen.
• Browns — dry leaves, straw, cardboard, shredded paper, wood chips. These supply carbon.

Aim for roughly one part greens to two or three parts browns by volume. If the pile smells sour, add browns. If it is dry and doing nothing, add greens and water.

Air and moisture

Turn the pile every week or two to introduce oxygen. It should feel like a wrung-out sponge — damp but not dripping. Hot composting, where the centre reaches 55–65°C, kills many weed seeds and pathogens and works fastest, but cool composting still produces good results over a longer period.

What not to add

Skip meat, dairy, oily food, pet waste, diseased plants and persistent weeds unless you are confident your pile gets hot enough. Keep it simple and the pile stays pleasant.

Small-space options

A lidded bin or wormery works on a balcony. Bokashi fermentation handles kitchen scraps indoors and produces a liquid feed. Even a simple trench in a garden bed can compost food waste directly.

When is it ready?

Finished compost is dark, crumbly and smells earthy. Screening out larger pieces gives a finer product for seed beds. Use it as mulch, dig it into vegetable beds, or brew it into compost tea.