You may not realize it, but many spring vegetables grown from seed should be planted as early as February 15. Items like carrots, lettuce, and spinach that cannot handle the heat need an early start. Thankfully, our NC State Cooperative Extension has assembled a planting guide to help (PDF here):
High quality seeds are available at all three Weaver Street Market locations from Botanical Interests, a family-owned business located in Broomfield, Colorado. Curtis and Judy Jones began the business in their spare bedroom 15 years ago, to make available better quality seeds as well as informational tools to help and inspire gardeners. They now have 22 employees and nationwide distribution. Their seeds have a reputation for high germination rates and are untreated and free of genetic engineering, and many are certified organic.
You can get more detailed planting info from these sources:
NC State Cooperative Extension’s “Central North Carolina Planting Calendar for Annual Vegetables, Fruits, and Herbs”
Chatham County Cooperative Extension’s “Planting and Harvesting Guide for Piedmont Vegetables and Herbs”