Wilmington NC, Columbia SC, Atlanta, Dallas, Norfolk. Average last spring frost March 28, first fall frost November 5 — a 222-day frost-free season.
Windows are calculated from your zone's average frost dates. Adjust ±1 week for microclimates, elevation, and your own frost records.
Southeast growers use plasticulture: fall-plant plugs, harvest spring. Renovation after harvest keeps plantings 3+ years.
Plant near: lettuce, spinach, onions
Keep away from: brassicas
BAU Farm Intelligence turns these windows into per-field tasks — indoor seed-start reminders, transplant dates, harvest projections — using your farm's actual frost history.