Chard can be harvested over many months. Later sowings will crop over winter and are suitable for a cold greenhouse. Sow April-July 2cm deep in 30cm rows and thin to 15cm, or 22cm each way in beds. Can also be raised in modules for transplanting. Good for containers.
Unlike true spinach, leaf beets can be harvested over many months, and will crop over winter. Grow in the same way as chard.