Zone 7b Last Frost Date 2025 Schedule. Use our 2025 frost dates calculator to find the average dates of the last light freeze of spring and the first light freeze of fall for locations across the u.s. With a last frost date of april 15th and first frost date of november 15th.
These dates are not absolute but serve as a. Below, you will find a schedule that defines when to start the cold stratification process for each seed type.