Succession Planting Calculator
Plan repeated planting batches and their harvest windows. Find the last fully fitting planting, partial season fits and overlapping harvest windows.
Starts with an editable example. Replace the dates and rules with your own.
Your calculation
Ready when you are
Choose your dates.
Select your counting rules and calculate.
Calculation details
| Step | Value |
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How to use this calculator
Enter the first planting, interval, batch count, maturity range, picking-window length and final usable harvest date. Review every batch before exporting its dates.
The harvest planning window runs from earliest maturity through latest maturity plus the picking-window length minus one. Batches beyond the season remain visible. Overlap describes possible timing, not continuous yield or growing conditions.
A worked example
Six batches 14 days apart from May 1, 2027, with 60–90 days to maturity and 14 picking days, have four complete windows inside a September 30 season end. The last two windows partially exceed the season.
Are unsuitable batches silently removed?
No. Every requested batch appears with a full, partial or outside-season status. Adjust the count or interval before using exported planting reminders.
Which calendar and years are supported?
Use Gregorian dates from 1900 through 2100, with results in that range. Daily attendance, office, coverage and chore plans allow up to 366 dates; school cycles, course plans and milestones allow up to 731. Dependency and historical workday calculations scan at most 3,661 dates. Class-session searches allow 366 dates and 200 sessions. Time-zone tools use browser IANA rules and require a choice when local times repeat. Dates and policy rules are entered manually; no employer, retailer, school or local weather policy is inferred. Copy, CSV and printing include the calculation rules; calendar exports appear when the result contains dated events.
What happens to my dates?
Calculations run on your device. Saving a calculation is optional and keeps it in this browser. A setup link contains the dates and settings you entered; anyone with the link can read them. Use one tab per saved calculator. Clear saved data from Privacy & settings.