When to Plant Napa Cabbage in Brunswick County, NC
What to do in May
Here's what deserves your attention in Brunswick County, North Carolina this month. Everything below is tailored to Zone 8b and timed around your local frost dates.
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Collect napa cabbage at their peak
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
A few tasks this May that'll pay off in June
- First harvests: napa cabbage
Napa cabbage forms tall, barrel-shaped heads with tender, crinkled leaves and a mild, slightly sweet flavor. It is the primary cabbage used for kimchi.
Brunswick County, North Carolina is in USDA Zone 8b. The average last spring frost is March 21 and the first fall frost is November 16, giving you a growing season of approximately 240 days.
At an elevation of 1,181 feet, Brunswick County receives approximately 54.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94°F, providing good warmth for Napa Cabbage during the growing season. Clay soil retains moisture well for Napa Cabbage, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Napa Cabbage root diseases.
Brunswick County Soil Profile
Soil Type
Clay Loam
Soil pH
5.6-6.7
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Soil Compatibility in Brunswick County
How your county's soil matches Napa Cabbage's growing requirements.
Soil pH
Your soil pH (5.6–6.7) overlaps with Napa Cabbage's range (6.0–7.5), though not a perfect match.
Soil Texture
The clay loam soil in Brunswick County is excellent for Napa Cabbage — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.5%). Annual compost additions will help Napa Cabbage.
How to Plant Napa Cabbage
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Napa Cabbage
Sow every 6.3 weeks. Last sowing by Sep 02 to harvest before frost.
For a dedicated fall crop, sow by Sep 07.
Plant Water Budget
Monthly Watering Guide for Napa Cabbage
Napa Cabbage needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.
| Month | Napa Cabbage Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.7" | 0" | ❄️ Dormant |
| Feb | — | 4.3" | 0" | ❄️ Dormant |
| Mar | 6.5" | 4.7" | 1.8" | 💧 Light watering |
| Apr | 6.5" | 4.1" | 2.4" | 💧 Light watering |
| May | 6.5" | 4.5" | 2" | 💧 Light watering |
| Jun | 6.5" | 4.4" | 2.1" | 💧 Light watering |
| Jul | 6.5" | 5.6" | 0.9" | 💧 Light watering |
| Aug | 6.5" | 5.7" | 0.8" | 💧 Light watering |
| Sep | 6.5" | 3.9" | 2.6" | 💧 Light watering |
| Oct | 6.5" | 4" | 2.5" | 💧 Light watering |
| Nov | 6.5" | 4.3" | 2.2" | 💧 Light watering |
| Dec | — | 4.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Brunswick County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Napa Cabbage Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Napa Cabbage Planting Timeline — Brunswick County, NC
Napa Cabbage Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 14 | Feb 14 – Feb 28 |
| Transplant Outdoors | March 21 | Mar 21 – Apr 4 |
| Direct Sow | March 7 | Mar 7 – Mar 28 |
| Harvest | May 16 | May 16 – Jun 20 |
| Fall Sowing | September 7 | Sep 7 – Sep 21 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Transplant Outdoors Direct Sow |
| April | Transplant Outdoors |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1.5"/week · 1-2 times/week
📅 Days to Maturity
55–75 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 8b
📆 Growing Season
240 days in Brunswick County
Growing Tips for Napa Cabbage in Brunswick County
Direct sow Napa Cabbage outdoors after March 21 in Brunswick County when soil has warmed and frost danger has passed.
With Brunswick County's clay soil (30% clay), work in 3-4 inches of compost before planting Napa Cabbage. Avoid tilling when soil is wet to prevent compaction.
Common pests for Napa Cabbage in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Best grown as a fall crop. Direct sow in late summer, 60-70 days before first frost. Keep soil evenly moist. Bolt-resistant varieties are available for spring planting.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Napa Cabbage in Other Locations
Frequently Asked Questions
When should I plant Napa Cabbage in Brunswick County, NC?
Brunswick County is in Zone 8b with an average last frost of March 21. Plan your Napa Cabbage planting based on this frost date — see the calendar above for exact timing.
What planting zone is Brunswick County, NC?
Brunswick County, North Carolina is in USDA Hardiness Zone 8b. The average last spring frost is March 21 and first fall frost is November 16.
Your Brunswick County Garden Planner — Free
A 24-page printable planner built for Brunswick County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.