Update the plantings already in your plan

Open the row’s menu

In the chart you changed, click the three dots at the end of the row, then Apply to existing plantings. It is greyed out on a cultivar row that has no values of its own: apply from the crop row instead.

Choose the season

Pick the Planning year; the season you are looking at is chosen. Heirloom tells you how many plantings will change. Click Apply.

Know what changes

From Direct seeding or Transplantation: the rows, spacing, days to maturity and harvest window of each planting, and its successions. First harvest dates follow the new days to maturity. The field planting date does not move; if the days in nursery changed, the nursery start date moves instead.

From Crop yield: the unit, yield and price. From Nursery: the tray, seeds per cell and potting up steps, with their tasks. From Tasks: the tasks linked to the crop.

Applied from the crop row, the change reaches every planting of the crop, including cultivars that have their own values. Applied from a cultivar row, it reaches that cultivar only.

Plantings that use climate-adjusted days to maturity keep them: Heirloom recalculates them from your new average for each planting’s own date. See Use climate-adjusted days to maturity in a planting.