Free farm tool
Pre-harvest interval calculator
EPA treats the pesticide application day as day zero and the following day as day one. Enter the last application date and the exact PHI printed for that product, crop, rate, and use, then verify the result against the full label before harvest.
Last reviewed August 6, 2026
Calculate the earliest harvest date
Enter both values to see a date.
Confirm before acting
Use the exact current label for the product, crop, rate, application method, and harvest use. Tank mixes and repeat applications can make the most restrictive direction control. This calculator does not evaluate the label and is not pesticide-use advice.