Compost is the soil-like organic material that is created when plant and vegetable matter breaks down and is rich in microorganisms and nutrients. It can be used as a potting mix, soil conditioner, or simply as a natural fertiliser.
This table includes organic materials that can be composted, some of which are not good for worm farms. More information is available under Methods.
Nitrogen products ('greens')
Tea bags (avoid the plastic mesh bags used for some specialty teas)
Fresh grass clippings (in smaller amounts)
Carbon products ('browns')
Dried grass clippings (preferable)
Mulch and straw
Newspaper (not the glossy pages)
Toothpicks and timber skewers
Twigs and sticks (thin and broken up only)
Vacuum cleaner bag contents
Do not add the following ingredients to compost:
- dairy products
- pet faeces (e.g. cats and dogs)
- meat scraps and bones
- plants that are diseased or have been sprayed with pesticides
- treated timber
- vegetable fats and oils.