Monty opens the programme with the menu sequence and, now that we're truly in the throes of autumn, Monty turns his attention to collecting fallen leaves. Monty regards these as a free harvest and shows us different ways to make leaf mould. Leaf mould is different to compost. Compost is very rich in nutrients and breaks down mainly by bacterial activity, whereas leaf mould is quite low in nutrients but fantastic for improving the structure of the soil