Boost your garden soil.

Vegetable gardens are often depleted of nutrients by the time autumn rolls around. Compost is the best all-round soil amendment. Add a 10cm layer of compost and lightly work it into the soil. If you're not planting it out, the compost will decompose throughout winter and nutrients will seep into the soil, ready for immediate uptake by spring plants. Well-rotted animal manure, sawdust, and chopped leaves are also good to dig in or put over the top of soil over winter.