Carrots planting calendar for USDA Zone 8b

Charleston SC, Savannah, Mobile, Austin, Jacksonville. Average last spring frost March 15, first fall frost November 15 — a 245-day frost-free season.

Zone fit: excellent

Carrots is well suited to Zone 8b. Standard planting dates work with minor adjustments for microclimates.

Key dates

Direct-seed outdoors

February 15 – March 8

Expected first harvest

May 3 – May 31

Fall planting window

August 16 – September 6

Fall harvest window

November 1 – November 29

Windows are calculated from your zone's average frost dates. Adjust ±1 week for microclimates, elevation, and your own frost records.

Spacing and soil

Plant spacing: 3″
Row spacing: 12″
Seed depth: 0.25″
Soil temperature: 45–75°F
Frost tolerance: hardy
Days to harvest: 70 days

Grower notes for Zone 8b

Keep soil surface moist until germination (2–3 weeks). Board over the row or light straw helps hold moisture.

Plant near: onions, leeks, tomatoes

Keep away from: dill

Other root crops for Zone 8b

Same crop, other zones

Track your own plantings

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.

Join the pilot Browse resources