We often get frost until mid April. Why do I know this if I’ve never done a garden? Because of Furniture Market. It happens here in High Point, NC every April and, for years, we rented our house out to Market attendees. We would clean up the house and the yard and put out fresh plantings so everything looked pretty and fresh. So, we paid attention for our new plantings to know if a freeze was coming (and sometimes it did!).
Anything that can’t handle a freeze waits until the end of April for planting.