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When to Plant Pac Choi in Jefferson Parish, LA

Jefferson Parish, Louisiana Zone 9a April

Top priorities for Jefferson Parish, Louisiana gardeners in April

Your garden in Jefferson Parish, Louisiana is working on a schedule, even when you're not. Here's where you should be this April.

Avg. last frost January 27
Avg. first frost December 18
Soil temp (4") 69°F
Watering Low
Pest pressure High
Daylight 12.7 hrs
  1. Start harvesting pac choi

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

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Pac choi (baby bok choy) is a compact variety of Chinese cabbage with tender leaves and crisp stems. It grows quickly and is ideal for containers and small spaces.

Jefferson Parish, Louisiana is in USDA Zone 9a. The average last spring frost is January 27 and the first fall frost is December 18, giving you a growing season of approximately 325 days.

At an elevation of 314 feet, Jefferson Parish receives approximately 55.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100°F, so Pac Choi may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Pac Choi will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Pac Choi root diseases.

Jefferson Parish, LA (Zone 9a) Year-round
325 days
Last Spring Frost January 27
325 growing days
First Fall Frost December 18

Jefferson Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (252 days to spare)
Start indoors: Dec 23 Transplant: Jan 20 🍅 Harvest: Mar 3 – Mar 31
Recommended (50%) ✓ Fits season (255 days to spare)
Start indoors: Dec 30 Transplant: Jan 27 🍅 Harvest: Mar 10 – Apr 7
Safe Start (90%) ✓ Fits season (226 days to spare)
Start indoors: Feb 4 Transplant: Mar 4 🍅 Harvest: Apr 15 – May 13

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 Jefferson Parish

How your county's soil matches Pac Choi's growing requirements.

Soil pH

Your soil pH (5.0–6.1) is more acidic than Pac Choi prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Jefferson Parish warms quickly in spring but drains fast. Pac Choi will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Pac Choi.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Pac Choi.

How to Plant Pac Choi

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Pac Choi

9
successive plantings in your 325-day season

Sow every 4.6 weeks. Last sowing by Oct 24 to harvest before frost.

For a dedicated fall crop, sow by Oct 23.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.7″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 1,180 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Pac Choi

Pac Choi 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 Pac Choi Needs Rainfall You Supplement Action
Jan 6.5" 4.6" 1.9" 💧 Light watering
Feb 6.5" 4.4" 2.1" 💧 Light watering
Mar 6.5" 4.8" 1.7" 💧 Light watering
Apr 6.5" 4.4" 2.1" 💧 Light watering
May 6.5" 4.1" 2.4" 💧 Light watering
Jun 6.5" 5.7" 0.8" 💧 Light watering
Jul 6.5" 5.9" 0.6" 💧 Light watering
Aug 6.5" 5.2" 1.3" 💧 Light watering
Sep 6.5" 3.6" 2.9" 💧 Light watering
Oct 6.5" 3.7" 2.8" 💧 Light watering
Nov 6.5" 4.8" 1.7" 💧 Light watering
Dec 6.5" 3.9" 2.6" 💧 Light watering

Water needs are for active growing months only (Jan–Dec in Jefferson Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Pac Choi 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.

Pac Choi needs ~1,188 GDD — county provides 8,150 GDD Excellent fit

Pac Choi Planting Timeline — Jefferson Parish, LA

Pac Choi Planting Calendar

Activity When Date Range
Start Indoors December 30 Dec 30 – Jan 13
Transplant Outdoors January 27 Jan 27 – Feb 10
Direct Sow January 6 Jan 6 – Jan 27
Harvest March 10 Mar 10 – Apr 7
Fall Sowing October 23 Oct 23 – Nov 6

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors Transplant Outdoors Direct Sow
February Transplant Outdoors
March Harvest
April Harvest
May
June
July
August
September
October Fall Sowing
November Fall Sowing
December Start Indoors

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

40–55 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

325 days in Jefferson Parish

Growing Tips for Pac Choi in Jefferson Parish

Direct sow Pac Choi outdoors after January 27 in Jefferson Parish when soil has warmed and frost danger has passed.

Sandy soil in Jefferson Parish dries quickly — mulch Pac Choi with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 100°F in Jefferson Parish, provide afternoon shade for Pac Choi and water deeply in the morning.

Your generous 326.0-day season in Jefferson Parish allows multiple plantings of Pac Choi. Sow every 20.0 days for continuous harvest.

Common pests for Pac Choi in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow in spring or fall. Grows best in cool weather. Space 6 inches apart for baby pac choi. Harvest whole plants or cut outer leaves as needed.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Pac Choi in Jefferson Parish, LA?

Jefferson Parish is in Zone 9a with an average last frost of January 27. Plan your Pac Choi planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jefferson Parish, LA?

Jefferson Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is January 27 and first fall frost is December 18.

🌱

Your Jefferson Parish Garden Planner — Free

A 24-page printable planner built for Jefferson 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.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Jefferson Parish, LA. Local conditions may vary. Last updated: April 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.