Blog

When to Plant Lemongrass in Jefferson Davis Parish, LA

Jefferson Davis Parish, Louisiana Zone 9a May

May in Jefferson Davis Parish, Louisiana — your action list

We've pulled the most time-sensitive tasks for Jefferson Davis Parish, Louisiana this May and put them front and centre. Tackle them in order.

Avg. last frost February 13
Avg. first frost December 7
Soil temp (4") 79°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Basket week: lemongrass

    If you can't use it all right away, check the food-preservation section of your planner.

June will be here before you know it — start on
  • First harvests: lemongrass

Instant PDF download. No spam, unsubscribe any time.

Lemongrass is a tropical grass with a strong citrus aroma used extensively in Southeast Asian cuisine. The swollen stem bases are the most flavorful part.

Jefferson Davis Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 13 and the first fall frost is December 7, giving you a growing season of approximately 297 days.

At an elevation of 381 feet, Jefferson Davis Parish receives approximately 61.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Lemongrass may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Lemongrass will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemongrass root diseases.

Jefferson Davis Parish, LA (Zone 9a) Year-round
297 days
Last Spring Frost February 13
297 growing days
First Fall Frost December 7
Share this guide:

Jefferson Davis Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

5.2-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (130 days to spare)
Start indoors: Dec 19 Transplant: Feb 6 🍅 Harvest: Apr 24 – Jul 24
Recommended (50%) ✓ Fits season (122 days to spare)
Start indoors: Jan 2 Transplant: Feb 20 🍅 Harvest: May 8 – Aug 7
Safe Start (90%) ✓ Fits season (117 days to spare)
Start indoors: Jan 23 Transplant: Mar 13 🍅 Harvest: May 29 – Aug 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 Jefferson Davis Parish

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

Soil pH

Your soil pH (5.2–6.3) overlaps with Lemongrass's range (5.5–7.5), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Lemongrass.

Organic Matter

Organic matter is low (2.0%). Add 2-3 inches of compost before planting Lemongrass.

How to Plant Lemongrass

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Lemongrass

4
successive plantings in your 297-day season

Sow every 8.6 weeks. Last sowing by Aug 09 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 497 gal / 100 sq ft

Monthly Watering Guide for Lemongrass

Lemongrass 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 Lemongrass Needs Rainfall You Supplement Action
Jan 5.4" 0" ❄️ Dormant
Feb 6.5" 4.8" 1.7" 💧 Light watering
Mar 6.5" 5.7" 0.8" 💧 Light watering
Apr 6.5" 4.6" 1.9" 💧 Light watering
May 6.5" 5.3" 1.2" 💧 Light watering
Jun 6.5" 4.5" 2" 💧 Light watering
Jul 6.5" 6.7" 0" ✅ Rainfall sufficient
Aug 6.5" 6.2" 0.3" 💧 Light watering
Sep 6.5" 4.6" 1.9" 💧 Light watering
Oct 6.5" 3.7" 2.8" 💧 Light watering
Nov 6.5" 4.3" 2.2" 💧 Light watering
Dec 6.5" 5.4" 1.1" 💧 Light watering

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

Lemongrass 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.

Lemongrass needs ~2,072 GDD — county provides 6,332 GDD Excellent fit

Lemongrass Planting Timeline — Jefferson Davis Parish, LA

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors January 2 Jan 2 – Jan 16
Transplant Outdoors February 20 Feb 20 – Mar 6
Direct Sow February 20 Feb 20 – Mar 13
Harvest May 8 May 8 – Aug 7

Plant 0.5" deep · 8" apart · Rows 12" 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 Harvest
September
October
November
December
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · Only during dry spells

📅 Days to Maturity

75–120 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

297 days in Jefferson Davis Parish

Growing Tips for Lemongrass in Jefferson Davis Parish

Direct sow Lemongrass outdoors after February 13 in Jefferson Davis Parish when soil has warmed and frost danger has passed.

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

Common pests for Lemongrass in this region include corn earworm and corn borers. Use row covers early in the season and inspect plants weekly.

General growing tips

Start from divisions or store-bought stalks rooted in water. Grow in rich, moist soil with full sun. In cold climates, grow in containers and overwinter indoors.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lemongrass in Jefferson Davis Parish, LA?

Jefferson Davis Parish is in Zone 9a with an average last frost of February 13. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jefferson Davis Parish, LA?

Jefferson Davis Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 13 and first fall frost is December 7.

🌱

Your Jefferson Davis Parish Garden Planner — Free

A 24-page printable planner built for Jefferson Davis 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Jefferson Davis 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.