My top seven choices to grow in winter are coriander, pak choi, perennial spinach (silverbeet with green stems), red kale, cos lettuce, spring onions and rocket.
They won’t grow very fast but they won’t go to seed either, which can be a problem with these crops in the warmer weather. Pests such as cabbage white butterflies and aphids aren’t a problem in the cooler months, although slugs and snails can take their toll. Get them started from seed in April and May if you can. Or buy seedlings or raise them over heat once the days draw in. Pick a few leaves at a time and you’ll have salad and greens for most of the winter. Go out at night with a head-torch and a pot of salt water. Pick off any slugs and put them in the salt water. I found it too difficult to restrict myself to seven, so I chose some more winter crops.
See photos below: