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When to Plant Bok Choy in East Baton Rouge Parish, LA

East Baton Rouge Parish, Louisiana Zone 9a May

East Baton Rouge Parish, Louisiana gardeners: here's your May plan

Here's what deserves your attention in East Baton Rouge Parish, Louisiana this month. Everything below is tailored to Zone 9a and timed around your local frost dates.

Avg. last frost February 21
Avg. first frost December 1
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. It's harvest week for bok choy

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

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Bok choy is a Chinese cabbage variety with crisp white stalks and dark green leaves. It is a fast-growing cool-season crop ideal for stir-fries and soups.

East Baton Rouge Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 21 and the first fall frost is December 1, giving you a growing season of approximately 283 days.

At an elevation of 96 feet, East Baton Rouge Parish receives approximately 51.6 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Bok Choy may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Bok Choy will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Bok Choy root diseases.

East Baton Rouge Parish, LA (Zone 9a) Year-round
283 days
Last Spring Frost February 21
283 growing days
First Fall Frost December 1

East Baton Rouge Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

4.9-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (207 days to spare)
Start indoors: Jan 15 Transplant: Feb 12 🍅 Harvest: Mar 26 – Apr 30
Recommended (50%) ✓ Fits season (206 days to spare)
Start indoors: Jan 24 Transplant: Feb 21 🍅 Harvest: Apr 4 – May 9
Safe Start (90%) ✓ Fits season (201 days to spare)
Start indoors: Feb 12 Transplant: Mar 12 🍅 Harvest: Apr 23 – May 28

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 East Baton Rouge Parish

How your county's soil matches Bok Choy's growing requirements.

Soil pH

Your soil pH (4.9–6.4) is more acidic than Bok Choy prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in East Baton Rouge Parish warms quickly in spring but drains fast. Bok Choy will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Bok Choy.

Organic Matter

Organic matter is moderate (2.1%). Annual compost additions will help Bok Choy.

How to Plant Bok Choy

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 Bok Choy

8
successive plantings in your 283-day season

Sow every 4.6 weeks. Last sowing by Oct 02 to harvest before frost.

For a dedicated fall crop, sow by Oct 06.

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Bok Choy

Bok Choy needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Bok Choy Needs Rainfall You Supplement Action
Jan 3.9" 0" ❄️ Dormant
Feb 3" 3.5" 0" ✅ Rainfall sufficient
Mar 3" 5.4" 0" ✅ Rainfall sufficient
Apr 3" 4.2" 0" ✅ Rainfall sufficient
May 3" 4" 0" ✅ Rainfall sufficient
Jun 3" 4.6" 0" ✅ Rainfall sufficient
Jul 3" 5.1" 0" ✅ Rainfall sufficient
Aug 3" 4.2" 0" ✅ Rainfall sufficient
Sep 3" 4.2" 0" ✅ Rainfall sufficient
Oct 3" 3.7" 0" ✅ Rainfall sufficient
Nov 3" 4.1" 0" ✅ Rainfall sufficient
Dec 3" 4.6" 0" ✅ Rainfall sufficient

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

Bok Choy 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.

Bok Choy needs ~1,062 GDD — county provides 6,035 GDD Excellent fit

Bok Choy Planting Timeline — East Baton Rouge Parish, LA

Bok Choy Planting Calendar

Activity When Date Range
Start Indoors January 24 Jan 24 – Feb 7
Transplant Outdoors February 21 Feb 21 – Mar 7
Direct Sow January 31 Jan 31 – Feb 21
Harvest April 4 Apr 4 – May 9
Fall Sowing October 6 Oct 6 – Oct 20

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

283 days in East Baton Rouge Parish

Growing Tips for Bok Choy in East Baton Rouge Parish

Direct sow Bok Choy outdoors after February 21 in East Baton Rouge Parish when soil has warmed and frost danger has passed.

Sandy soil in East Baton Rouge Parish dries quickly — mulch Bok Choy with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Your generous 284.0-day season in East Baton Rouge Parish allows multiple plantings of Bok Choy. Sow every 20.0 days for continuous harvest.

Common pests for Bok Choy 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 for best results. Keep soil consistently moist. Harvest whole heads or cut outer leaves for a cut-and-come-again approach.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Bok Choy in East Baton Rouge Parish, LA?

East Baton Rouge Parish is in Zone 9a with an average last frost of February 21. Plan your Bok Choy planting based on this frost date — see the calendar above for exact timing.

What planting zone is East Baton Rouge Parish, LA?

East Baton Rouge Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 21 and first fall frost is December 1.

🌱

Your East Baton Rouge Parish Garden Planner — Free

A 24-page printable planner built for East Baton Rouge 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 East Baton Rouge Parish, LA. Local conditions may vary. Last updated: May 2026.

Sources & credits

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