When to plant brussels sprouts in USDA Zone 8b

Plan your brussels sprouts planting around local frost risk and soil temperature, then work backward from the harvest week your buyers need. The calendar below is a starting point, not a field-level weather forecast.

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

Key dates

Start seeds indoors
January 25 – February 8
Transplant outdoors
February 22 – March 15
Expected first harvest
June 9 – July 7
Fall planting window
July 5 – July 26
Fall harvest window
October 20 – November 17

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
24″
Row spacing
36″
Seed depth
0.25″
Soil temperature
55–75°F
Frost tolerance
hardy
Days to harvest
100 days

Grower notes for Zone 8b

Fall-only crop in the Southeast. Top the plant 4 weeks before target harvest for uniform sprouts up the stem.

Plant near: onions, dill

Keep away from: strawberries

Other brassicas 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.