I've made compost in a bottle and your tips say stuff about compost heaps. How do I maintain the compost and know when it's ready to be used?
When your compost becomes dry, brown and crumbly it is ready to go in the garden. If you don't have the space for a compost heap at your place, you could try a Bokashi composting system, as it ferments kitchen waste, including meat and dairy, and turns it into a safe soil builder and nutrient-rich tea for your plants. And it fits under the sink.