The RHS define sustainable gardening as 'the concept of using practices to maintain a garden so that natural resources are not exhausted and without causing ecological damage'. We wonder how the average gardener can achieve these aims.
It doesn't take too much effort. You just have to learn to garden with nature rather than against it. By avoiding artificial fertilizers and pesticides you will maximise bio-diversity, creating an environment that is a thriving eco-system in which compost and manure replace chemicals.