April 15th is the last frost date I use. It is variable of course for every year. There is a good planting guide on the Wyatt-Quarles Seed Company website, along with recommended varieties. They are in Garner, NC, wholesale, retail sales sites are listed on their main page. This veggie guide is for the Piedmont and I use it but give or take a week or two, mostly dependent on my energy level.

You might want to look at the Vegetable Forum here on the GW. There is a ton of info there.

Nancy the nancedar

Here is a link that might be useful: Veggie Planting Guide for the Piedmont