When to plant Napa Cabbage in Washington Parish County,
The best window to plant Napa Cabbage in Washington Parish County, is February 18–March 11, when soil warms to 50°F. Last frost typically hits March 11; first frost November 22. A second sowing from September 27 to October 11 extends the harvest into fall.
When to Plant Napa Cabbage in Washington Parish, LA
Your June game plan for Washington Parish, Louisiana
Your garden in Washington Parish, Louisiana is working on a schedule, even when you're not. Here's where you should be this June.
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Harvest napa cabbage as they ripen
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
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.
Washington Parish, Louisiana is in USDA Zone 9a. The average last spring frost is March 11 and the first fall frost is November 22, giving you a growing season of approximately 256 days.
At an elevation of 439 feet, Washington Parish receives approximately 56.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 93°F, providing good warmth for Napa Cabbage during the growing season. Sandy soil warms quickly in spring — great for early planting — but Napa Cabbage will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Napa Cabbage root diseases.
Washington Parish Soil Profile
Soil Type
Sandy Loam
Soil pH
5.1-6.3
Drainage
Well Drained
Napa Cabbage 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 Washington Parish
How your county's soil matches Napa Cabbage's growing requirements.
Soil pH
Your soil pH (5.1–6.3) is more acidic than Napa Cabbage prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in Washington Parish warms quickly in spring but drains fast. Napa Cabbage will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Napa Cabbage.
Organic Matter
Organic matter is low (1.9%). Add 2-3 inches of compost before planting Napa Cabbage.
How to Plant Napa Cabbage
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Napa Cabbage
Sow every 6.3 weeks. Last sowing by Sep 08 to harvest before frost.
For a dedicated fall crop, sow by Sep 27.
Napa Cabbage 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 | — | 4.9" | 0" | ❄️ Dormant |
| Feb | — | 5" | 0" | ❄️ Dormant |
| Mar | 6.5" | 5.7" | 0.8" | 💧 Light watering |
| Apr | 6.5" | 4.2" | 2.3" | 💧 Light watering |
| May | 6.5" | 4.7" | 1.8" | 💧 Light watering |
| Jun | 6.5" | 4.6" | 1.9" | 💧 Light watering |
| Jul | 6.5" | 5.4" | 1.1" | 💧 Light watering |
| Aug | 6.5" | 5.2" | 1.3" | 💧 Light watering |
| Sep | 6.5" | 3.8" | 2.7" | 💧 Light watering |
| Oct | 6.5" | 4.1" | 2.4" | 💧 Light watering |
| Nov | 6.5" | 4.1" | 2.4" | 💧 Light watering |
| Dec | — | 4.7" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Washington Parish). 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 — Washington Parish, LA
Napa Cabbage Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 11 | Feb 11 – Feb 25 |
| Transplant Outdoors | March 11 | Mar 11 – Mar 25 |
| Direct Sow | February 18 | Feb 18 – Mar 11 |
| Harvest | May 6 | May 6 – Jun 10 |
| Fall Sowing | September 27 | Sep 27 – Oct 11 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1.5"/week · Only during dry spells
📅 Days to Maturity
55–75 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
256 days in Washington Parish
Growing Tips for Napa Cabbage in Washington Parish
Direct sow Napa Cabbage outdoors after March 11 in Washington Parish when soil has warmed and frost danger has passed.
Sandy soil in Washington Parish dries quickly — mulch Napa Cabbage with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
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
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Napa Cabbage in Other Locations
Frequently Asked Questions
When should I plant Napa Cabbage in Washington Parish, LA?
Washington Parish is in Zone 9a with an average last frost of March 11. Plan your Napa Cabbage planting based on this frost date — see the calendar above for exact timing.
What planting zone is Washington Parish, LA?
Washington Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is March 11 and first fall frost is November 22.
When should I plant Napa Cabbage in Washington Parish County, ?
In Washington Parish County, , plant Napa Cabbage after the last frost (around March 11) and before the first frost (around November 22). Best results when soil holds above 50°F.
What growing zone is Washington Parish County, for Napa Cabbage?
Washington Parish County sits in USDA Zone 9a. Napa Cabbage grows reliably in zones 2a through 11b, so it's a good fit here.
Can Napa Cabbage grow in Washington Parish County's climate?
Yes — Napa Cabbage grows well in Washington Parish County's temperate climate. Washington Parish County averages a 256-day frost-free season, with last frost around March 11 and first frost around November 22.
Your Washington Parish Garden Planner — Free
A 22-page printable planner built for Washington Parish (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.