How many weeks should I leave between succession plantings?

No longer than the crop’s harvest window: each planting then takes over from the one before, and your market table never runs empty. That rule of thumb comes from Jean-Martin Fortier’s market gardener method: if a lettuce planting gives heads for two weeks, plant every two weeks.

Set it in Time between plantings when you create the succession. With Use climate-adjusted DTM on, each planting also gets the days to maturity of its own date, so a cool spring planting is not planned as fast as a summer one.

The steps are in Plan a succession.