Harvest Date Calculator
Estimate when your crops will be ready to harvest based on planting date, crop type and planting method. Add multiple crops and see all harvest dates on a timeline sorted by earliest harvest.
How the Harvest Date Calculator Works
This harvest date calculator uses days-to-maturity data for 25 popular crops to estimate when your garden produce will be ready to pick. Enter your planting date, select the crop variety and choose whether you are direct sowing seeds or transplanting seedlings. Transplanted crops typically mature about two weeks faster because the seedlings already have established roots and growth when they go into the garden. The calculator shows both the earliest and latest expected harvest dates, giving you a realistic harvest window rather than a single guess. All calculations run in your browser with no data sent to any server.
Understanding Days to Maturity
Days to maturity is the number of days from planting until the first harvest. For direct-sown crops like radishes, carrots and beans, this count starts from the day seeds go into the ground. For transplanted crops like tomatoes, peppers and eggplant, many seed companies count from the transplant date rather than the seed-starting date. This calculator accounts for both methods automatically. Fast crops like radishes can be ready in just 22 days, while slow growers like pumpkins and onions may need 90 to 120 days. Understanding these timelines helps you plan succession plantings and avoid gaps in your harvest schedule.
Transplant vs Direct Sow — Which Is Better?
Direct sowing works best for root vegetables like carrots and radishes that do not transplant well, plus fast-growing crops like beans and peas. Transplanting is ideal for heat-loving crops like tomatoes, peppers and eggplant that need a head start indoors before the growing season begins. Transplanted seedlings have a two-week advantage because they already have leaves and roots when they go into the ground. This calculator subtracts approximately 14 days from the maturity window for transplanted crops. If you live in a short-season climate, transplanting lets you harvest warm-season crops before the first fall frost arrives.
Tips for Tracking Multiple Crop Harvests
Add all your planted crops to the timeline to see which ones will be ready first. This helps you plan kitchen usage, canning sessions and farmers market schedules. Consider succession planting fast crops like lettuce, spinach and radishes every two to three weeks so you always have something ready to harvest. Pay attention to the harvest window — most crops have a range of days rather than an exact date. Tomatoes might start ripening at 70 days but continue producing for weeks. Check your plants daily once you enter the harvest window and pick produce at peak ripeness for the best flavor and nutrition.