Harvest Date Estimator
Turn a planting date into flowering, harvest and ratoon windows — so you can plan labour, inputs and sales.
Cycle length is driven mainly by temperature. Use the presets as a starting point, then calibrate against your own bunch-emergence and harvest records.
Harvest date estimator
Projects flowering, first harvest and three ratoon cycles from a planting date.
Cycle length reference#
| Environment | Planting → flowering | Planting → first harvest | Ratoon → harvest |
|---|---|---|---|
| Hot irrigated lowlands | 6–8 months | 9–11 months | 8–10 months |
| Warm tropics, average | 8–9 months | 11–13 months | 10–12 months |
| Cool subtropics | 10–13 months | 14–20 months | 13–18 months |
| Highland 1,200–1,800 m | 9–12 months | 13–18 months | 12–16 months |
Bunch filling itself takes 75–100 days (about 90 in warm conditions, longer when cool) — the estimator uses this to place flowering before harvest.
Calibrating the estimate#
The projection is a planning tool, not a promise. Replace it with your own data as soon as you have it:
- Record bunch emergence date for a sample of stems — this is your real flowering date.
- Record actual harvest date and compute days after flowering.
- Record harvest-to-harvest interval for each ratoon cycle.
- Feed the averages back into the inputs above.
After one full cycle your own calibration will beat any preset.
Staggering plantings#
A single planting date produces a single harvest spike — maximum labour, maximum price risk. Staggering into two or three cohorts spread across a quarter smooths labour, spreads risk across price cycles and keeps your packhouse occupied.
Feed each planting date into the calculator separately to see how the windows overlap.
Next steps#
- Execution detail: How to harvest.
- Plan the year visually: Crop calendar.
- Turn dates into money: Farm budget.