When to Plant Brussels Sprouts in North Carolina
Published: April 24, 2026
North Carolina gardeners in Zone 7a have a 35-week growing season for brussels sprout (March 15 to November 15). North Carolina's spring and fall windows both work well for brussels sprout — some gardeners plant both successions for a long harvest. This guide gives exact dates for North Carolina based on your local frost calendar.
Brussels Sprout Planting Dates for North Carolina
| Start seeds indoors | February 8–15 |
| Last frost (average) | March 15 |
| Transplant outdoors | June 7–17 |
| Expect first harvest | August 26 – September 15 |
| Fall crop start | August 16–26 |
| Fall harvest | November 4 |
| First fall frost (average) | November 15 |
Dates above assume Zone 7a, the most common zone in North Carolina. Gardeners in cooler Charlotte (Zone 7a) plant 1–2 weeks later; warmer Wilmington (Zone 7b) can plant 1–2 weeks earlier.
⚠ Brussels sprouts are planted in midsummer for a fall harvest. Count back 90 days from your first fall frost to find the transplant date. Start seeds indoors 4–6 weeks before that date. Flavor improves after frost.
Growing Brussels Sprouts in North Carolina's Climate
North Carolina's moderate Zone 7a climate is well-suited to brussels sprout with minimal special accommodation. The standard transplant calendar works as written, and harvest windows line up with what seed packets recommend without adjustment.
Succession planting extends your brussels sprout harvest significantly in North Carolina. A second planting 3 to 4 weeks after the first gives you a backup in case of pest pressure and extends the total harvest window into early fall.
Common brussels sprout pests to watch for in North Carolina include Cabbage Worm and Aphid. The first line of defense is companion planting: Onion and Celery planted nearby discourage several of these pests by confusing host-plant identification or repelling adults before they can lay eggs. Weekly garden walks in the early morning catch problems when they're still manageable.
Brussels Sprout Garden Calendar for North Carolina
| Month | Task | Notes |
|---|---|---|
| January | — | Dormant season |
| February | Start seeds indoors | Use grow lights; warm soil to 70–75°F for best germination |
| March | Harden off seedlings | Set seedlings outdoors 1–2 hours daily, increasing gradually |
| April | — | Dormant season |
| May ← | Watch for bolting | Harvest promptly; spring heat arrives quickly |
| June | Transplant outdoors | Soil temp must be 45°F+; nighttime lows above 50°F |
| July | — | Dormant season |
| August | First harvest window opens | Brussels Sprout begins producing 80–100 days after transplant |
| September | — | Dormant season |
| October | — | Dormant season |
| November | First frost approaches | Harvest remaining brussels sprout; cover plants on frost nights |
| December | — | Dormant season |
Brussels Sprout Growing Tips for North Carolina Gardeners
- •Count back 90 days from first fall frost to find the transplant date — this is the most important Brussels sprout timing rule.
- •Pinch the top of each plant about a month before first frost — this channels energy into sprout formation.
- •North Carolina's moderate climate supports succession planting — sow new transplants or seeds every 3 weeks during spring to extend the harvest window into fall.
- •Harvest sprouts from the bottom up as they reach 1-inch diameter; top sprouts finish last.
Companion Planting for Brussels Sprouts in North Carolina
In North Carolina's moderate climate, planting brussels sprout with Onion and Celery helps deter pests and improve soil. Avoid planting near Tomato and Strawberry, which inhibit brussels sprout growth through root chemistry or shared pest pressure. See the full brussels sprout companion planting guide for the complete list.
Brussels Sprouts Planting Dates by City in North Carolina
Top cities in North Carolina — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant brussels sprout in North Carolina?
In North Carolina (Zone 7a), start brussels sprout seeds indoors around February 8–15 and transplant outdoors around June 7–17 — 12 weeks after the state's average last frost of March 15.
What is the last frost date in North Carolina?
North Carolina's average last frost date is March 15 in the state's most common Zone 7a. Frost dates vary by city — higher elevations and northern counties run 1 to 3 weeks later than the state average. See the city list below for city-level frost dates.
Can I grow brussels sprout year-round in North Carolina?
brussels sprout is a cool-season crop in North Carolina, with spring and fall windows. Summer heat bolts the plants before they can produce a harvestable crop. Succession planting every 2–3 weeks stretches the harvest window.
What brussels sprout varieties grow best in North Carolina?
For North Carolina's Zone 7a, consult a local nursery or extension office for brussels-sprouts variety recommendations.
When do I start brussels sprout seeds indoors in North Carolina?
Start brussels sprout seeds indoors in North Carolina around February 8–15, which is 5 weeks before the state's average last frost of March 15. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.