If March 1st is your “last” frost date, then around 80% of the time it will be.
However just a reminder, sometimes you will get frost or some other problem after that time, so be prepared to protect the plants, and maybe hold back a few under grow lights in case you have to replace them.
“If March 1st is your “last” frost date...”
I’m figuring sometime in Feb. is the last frost date. We usually get our worst cold early in February and that’s when everyone wants March to get here. I will start the March seeds the first of March, so they won’t go outside for a few weeks after that. I do have a few to put under grow lamp in February but they won’t go outside until March.