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When to Plant Zucchini in East Baton Rouge Parish, LA

East Baton Rouge Parish, Louisiana Zone 9a May

Your May planting checklist for East Baton Rouge Parish, Louisiana

May is a pivotal month for East Baton Rouge Parish, Louisiana gardens. Focus on these tasks first and you'll set up the rest of the season for success.

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 zucchini

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

To set up a strong June, finish these tasks
  • First harvests: zucchini

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Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.

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 Zucchini may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Zucchini will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Zucchini 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
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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 (172 days to spare)
Start indoors: Jan 15 Transplant: Feb 19 🍅 Harvest: Apr 9 – Jun 4
Recommended (50%) ✓ Fits season (171 days to spare)
Start indoors: Jan 24 Transplant: Feb 28 🍅 Harvest: Apr 18 – Jun 13
Safe Start (90%) ✓ Fits season (166 days to spare)
Start indoors: Feb 12 Transplant: Mar 19 🍅 Harvest: May 7 – Jul 2

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 Zucchini's growing requirements.

Soil pH

Your soil pH (4.9–6.4) is more acidic than Zucchini 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. Zucchini will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Zucchini.

Organic Matter

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

How to Plant Zucchini

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Zucchini

7
successive plantings in your 283-day season

Sow every 5.1 weeks. Last sowing by Oct 02 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
0.8″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 194 gal / 100 sq ft

Monthly Watering Guide for Zucchini

Zucchini needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.

Month Zucchini Needs Rainfall You Supplement Action
Jan 3.9" 0" ❄️ Dormant
Feb 5.2" 3.5" 1.7" 💧 Light watering
Mar 5.2" 5.4" 0" ✅ Rainfall sufficient
Apr 5.2" 4.2" 1" 💧 Light watering
May 5.2" 4" 1.2" 💧 Light watering
Jun 5.2" 4.6" 0.6" 💧 Light watering
Jul 5.2" 5.1" 0.1" 💧 Light watering
Aug 5.2" 4.2" 1" 💧 Light watering
Sep 5.2" 4.2" 1" 💧 Light watering
Oct 5.2" 3.7" 1.5" 💧 Light watering
Nov 5.2" 4.1" 1.1" 💧 Light watering
Dec 5.2" 4.6" 0.6" 💧 Light watering

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.

Zucchini 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.

Zucchini needs ~1,116 GDD — county provides 6,035 GDD Excellent fit

Zucchini Planting Timeline — East Baton Rouge Parish, LA

Zucchini Planting Calendar

Activity When Date Range
Start Indoors January 24 Jan 24 – Feb 7
Transplant Outdoors February 28 Feb 28 – Mar 14
Direct Sow February 21 Feb 21 – Mar 14
Harvest April 18 Apr 18 – Jun 13

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.2"/week · Only during dry spells

📅 Days to Maturity

45–60 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 Zucchini in East Baton Rouge Parish

Direct sow Zucchini 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 Zucchini 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 Zucchini. Sow every 22.0 days for continuous harvest.

Common pests for Zucchini in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost. Harvest when fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

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

East Baton Rouge Parish is in Zone 9a with an average last frost of February 21. Plan your Zucchini 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.