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.
Do not soak seed — beans rot easily. Successive plantings every 2 weeks until 60 days before first frost.
Plant near: corn, cucumbers, carrots
Keep away from: onions, garlic
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.