"Minimum, optimum, and maximum temperatures for non-stratified seeds were found to be above 16⚬, 22⚬-25⚬, and below 33⚬ C, respectively.
That's 60.8F, 71.6 to 77, and below 91.4 in Fahrenheit.
From:
https://www.journals.uchicago....
Stratified seeds germinated over a wider range.
Edited to correct link address
