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When to Plant Eggplant in St. Landry Parish, LA

St. Landry Parish, Louisiana Zone 9a May

Your May game plan for St. Landry Parish, Louisiana

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

Avg. last frost February 19
Avg. first frost December 1
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Start harvesting eggplant

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

Get ahead of June
  • First harvests: eggplant

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Eggplant is a heat-loving solanaceous crop that produces glossy fruits in purple, white, or striped varieties. It requires long, warm growing seasons for best production.

St. Landry Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 19 and the first fall frost is December 1, giving you a growing season of approximately 285 days.

At an elevation of 370 feet, St. Landry Parish receives approximately 59.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Eggplant may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Eggplant will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Eggplant root diseases.

St. Landry Parish, LA (Zone 9a) Year-round
285 days
Last Spring Frost February 19
285 growing days
First Fall Frost December 1

St. Landry Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

4.8-6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (146 days to spare)
Start indoors: Dec 27 Transplant: Feb 14 🍅 Harvest: Apr 25 – Jun 27
Recommended (50%) ✓ Fits season (145 days to spare)
Start indoors: Jan 8 Transplant: Feb 26 🍅 Harvest: May 7 – Jul 9
Safe Start (90%) ✓ Fits season (139 days to spare)
Start indoors: Jan 28 Transplant: Mar 18 🍅 Harvest: May 27 – Jul 29

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 St. Landry Parish

How your county's soil matches Eggplant's growing requirements.

Soil pH

Your soil pH (4.8–6.0) is more acidic than Eggplant prefers (5.5–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in St. Landry Parish warms quickly in spring but drains fast. Eggplant will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Eggplant.

How to Plant Eggplant

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

Succession Planting Eggplant

5
successive plantings in your 285-day season

Sow every 7.4 weeks. Last sowing by Sep 07 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 565 gal / 100 sq ft

Monthly Watering Guide for Eggplant

Eggplant needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.

Month Eggplant Needs Rainfall You Supplement Action
Jan 4.4" 0" ❄️ Dormant
Feb 4.8" 4.7" 0.1" 💧 Light watering
Mar 4.8" 6" 0" ✅ Rainfall sufficient
Apr 4.8" 4.1" 0.7" 💧 Light watering
May 4.8" 4.6" 0.2" 💧 Light watering
Jun 4.8" 4.7" 0.1" 💧 Light watering
Jul 4.8" 7" 0" ✅ Rainfall sufficient
Aug 4.8" 6.4" 0" ✅ Rainfall sufficient
Sep 4.8" 4.1" 0.7" 💧 Light watering
Oct 4.8" 4.3" 0.5" 💧 Light watering
Nov 4.8" 4" 0.8" 💧 Light watering
Dec 4.8" 5.6" 0" ✅ Rainfall sufficient

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

Eggplant 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.

Eggplant needs ~1,706 GDD — county provides 6,506 GDD Excellent fit

Eggplant Planting Timeline — St. Landry Parish, LA

Eggplant Planting Calendar

Activity When Date Range
Start Indoors January 8 Jan 8 – Jan 22
Transplant Outdoors February 26 Feb 26 – Mar 12
Direct Sow February 19 Feb 19 – Mar 12
Harvest May 7 May 7 – Jul 9

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Only during dry spells

📅 Days to Maturity

65–85 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

285 days in St. Landry Parish

Growing Tips for Eggplant in St. Landry Parish

Direct sow Eggplant outdoors after February 19 in St. Landry Parish when soil has warmed and frost danger has passed.

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

With summer highs reaching 97°F in St. Landry Parish, provide afternoon shade for Eggplant and water deeply in the morning.

Common pests for Eggplant in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 8-10 weeks before last frost. Transplant only after nighttime temperatures stay above 55F. Mulch to retain moisture and warmth around roots.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel
  • Kohlrabi

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Eggplant in St. Landry Parish, LA?

St. Landry Parish is in Zone 9a with an average last frost of February 19. Plan your Eggplant planting based on this frost date — see the calendar above for exact timing.

What planting zone is St. Landry Parish, LA?

St. Landry Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 19 and first fall frost is December 1.

🌱

Your St. Landry Parish Garden Planner — Free

A 24-page printable planner built for St. Landry 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 St. Landry 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.