When Will Sweet Corn Be Ready If Planted May 15 (90 Days)?
Sweet corn planted May 15 with a 90-day maturity period should be ready to harvest around August 13.
How to use this tool
- Enter the date you planted or transplanted seedlings.
- Enter the days-to-maturity from the seed packet.
- The calculator returns the estimated harvest date.
Corn typically takes 80–100 days — estimate your August harvest date when planting in mid-May.
Frequently asked questions
- How do I calculate harvest date from planting date?
- Add the days-to-maturity (from the seed packet) to the planting or transplant date. For example, planting tomatoes on May 1 with 70 days to maturity gives a harvest date around July 10.
- What does days to maturity mean on a seed packet?
- Days to maturity is the number of days from transplanting (or from germination for direct-sown crops) until the plant reaches harvestable size. It is an average — actual timing varies by weather and growing conditions.