Enter your first sowing date, a final harvest target, the interval between sowings, and days from sowing to harvest. The planner stops when a batch cannot mature before your target minus the buffer. It shows up to 120 batches and rejects impractical ranges. Actual harvest timing will depend on growing conditions.
Succession sowing planner
Fit repeated sowings before your harvest target. Harvest estimates depend on weather, variety and your assumptions.
These tools calculate from your inputs. Save or print with your browser. Check forecasts, soil conditions and seed-packet instructions before planting.
These calculations use your inputs locally in the browser; they do not infer city frost dates. Read our gardening disclaimer and compare all planting tools.
How to use the succession planting planner
- Enter the date of your first sowing.
- Enter the number of days from sowing to harvest for the crop.
- Set the interval between sowings. Two weeks is a common starting point for lettuce, radishes and bush beans.
- Enter the final date by which you want to finish harvesting, and an optional buffer.
Worked example
Start sowing May 1 with a 14-day interval, a crop that takes 50 days, and a September 30 harvest target with a 7-day buffer. The last batch must be sown by August 4, so the planner lists seven sowings: May 1, May 15, May 29, June 12, June 26, July 10 and July 24.
Tips for better results
- Pick an interval that matches how much you can eat or sell at once. Shorter intervals give a steadier supply but more work.
- Heat-sensitive crops like lettuce may bolt in midsummer, so skip those batches or shade them.
- Rotate beds between batches if you can, to reduce pest and disease build-up.
Related reading: why soil temperature matters before planting.