Stardew Valley · Crop planning
Stardew Valley: the last day to plant crops
Calculate the last safe planting day, count blueberry harvests, and avoid losing crops at the season change.
Count growth nights, not calendar squares
Planting day is the starting point. A crop that needs four days does not finish after counting the planting date as day one. If you plant on the 24th, its growth nights take it to the mornings of the 25th, 26th, 27th, and 28th.
Use this first-harvest calculation: planting day + growth days = harvest day. For a crop that cannot survive the next season, that result must be 28 or earlier. Leaving a watering day out can push the result past the deadline.
Three useful planting deadlines
| Crop | Growth | Last planting day | First harvest |
|---|---|---|---|
| Parsnip | 4 days | Spring 24 | Spring 28 |
| Blueberry | 13 days | Summer 15 | Summer 28 |
| Pumpkin | 13 days | Fall 15 | Fall 28 |
These are calculated deadlines, not recommendations to wait. A last-day blueberry planting gives you only one harvest, which changes the value of an otherwise useful regrowing crop. Decide whether that single harvest serves your goal before buying seeds.
Count every blueberry harvest
Blueberries planted on Summer 1 first mature on Summer 14. Their four-day regrowth interval gives harvests on the 14th, 18th, 22nd, and 26th: four harvests before the season ends.
For a regrowing crop, first find the initial harvest date. If it is no later than day 28, the number of harvests is 1 + floor((28 − first harvest day) ÷ regrowth interval). “Floor” means round down. For Summer 14, that is 1 + floor(14 ÷ 4) = 4.
This counts harvest events, not individual items or profit. A crop can produce more than one item, and purchase costs still matter. Compare your actual starting date in the Stardew profit calculator.
Check these assumptions before spending
- Watering: a deadline with no spare days leaves no room for missed growth.
- Bonuses: growth-speed effects require the game's stage rules; do not simply round a percentage off a seed packet's total.
- Season: multi-season crops and protected growing spaces do not use the same season-end cutoff.
- Purpose: a crop for a gift or collection may be worth planting even when it is not your best income option.
A practical late-season routine
Before buying seeds, write down today's date, the crop's growth time, and the date you need the harvest. If the harvest date is later than either the season boundary or your personal deadline, choose another crop or wait.
Leave a spare day when you can. An exact mathematical cutoff helps you understand the rule; a small buffer makes a real play session more forgiving. Use the crop planner to compare a full schedule, then check its assumptions against your save.
Sources & scope
These examples cover ordinary outdoor crops, daily watering, and no growth-speed bonuses. Greenhouses, multi-season crops, mods, and speed modifiers need different assumptions.