Hang bird balls, clean equipment and ponder the riches in your garden
I am tempted to tell you to do nothing much in December. Except, perhaps, to cloche or cover any vulnerable crops you care about particularly, say, chicories or pigeon-friendly kales; to lift leeks and store your root crops if frost is looking imminent. Dig over empty ground now. It will be harder in the coming months.
Rocket, corn salad, land cress and winter purslane should still do fine under cover outside or on a sunny windowsill. Plant raspberries and blackberries if you haven’t already. It’s time, too, for pruning fruit trees, though best leave cherry or plum until spring.