Crop Calendar — Entered Dates and Intervals

Build a date-based crop scenario using timing information you provide for your site and variety. Choose a local reference date, an offset to field planting, an indoor lead time and a harvest interval. The calendar can repeat the planting at fixed intervals and compare each complete harvest window with your chosen cutoff.

How to use this tool

1. Name the crop and site, then enter your locally chosen reference date.
2. Set days before or after that date for the first field planting.
3. Enter indoor lead time and days from field planting to first harvest.
4. Choose harvest-window length, succession count and interval, then check the cutoff column.

Formula

Field date = reference + offset + planting index × interval; indoor date = field date − lead; first harvest = field date + maturity days; window end = first harvest + window length − 1

Calendar days are used, including weekends and leap days. The first planting has index zero. A one-day harvest window ends on its starting day. The cutoff is inclusive; a window ending exactly on that date is counted as ending by it.

Example

Using May 15, 2026 plus 7 days gives field planting on May 22. With 60 days to harvest, the first harvest is July 21. A 14-day window ends August 3. Three plantings 14 days apart finish on August 3, 17 and 31.