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When to Plant Lemongrass in Ouachita County, AR

Ouachita County, Arkansas Zone 8a May

May in the garden — Ouachita County, Arkansas

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 23
Avg. first frost November 3
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Begin indoor sowing: lemongrass

    Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.

Coming up in June — start thinking about
  • First harvests: lemongrass

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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.

Ouachita County, Arkansas is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 3, giving you a growing season of approximately 225 days.

At an elevation of 591 feet, Ouachita County receives approximately 48.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 95°F, so Lemongrass may need afternoon shade and extra watering during peak heat.

Ouachita County, AR (Zone 8a) Long season
225 days
Last Spring Frost March 23
225 growing days
First Fall Frost November 3

Ouachita County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (48 days to spare)
Start indoors: Jan 23 Transplant: Mar 27 🍅 Harvest: Jun 12 – Sep 11
Recommended (50%) ✓ Fits season (43 days to spare)
Start indoors: Feb 2 Transplant: Apr 6 🍅 Harvest: Jun 22 – Sep 21
Safe Start (90%) ✓ Fits season (42 days to spare)
Start indoors: Feb 24 Transplant: Apr 28 🍅 Harvest: Jul 14 – Oct 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 Ouachita County

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

Soil pH

Your soil pH (5.6–7.1) is within Lemongrass's preferred range (5.5–7.5).

Soil Texture

The silt loam soil in Ouachita County is excellent for Lemongrass — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Lemongrass.

How to Plant Lemongrass

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

Succession Planting Lemongrass

3
successive plantings in your 225-day season

Sow every 8.6 weeks. Last sowing by Jul 06 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,180 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 4.2" 0" ❄️ Dormant
Feb 3.4" 0" ❄️ Dormant
Mar 6.5" 4.4" 2.1" 💧 Light watering
Apr 6.5" 3.4" 3.1" 💧 Light watering
May 6.5" 4.1" 2.4" 💧 Light watering
Jun 6.5" 3.9" 2.6" 💧 Light watering
Jul 6.5" 5.6" 0.9" 💧 Light watering
Aug 6.5" 4.8" 1.7" 💧 Light watering
Sep 6.5" 4.1" 2.4" 💧 Light watering
Oct 6.5" 3.4" 3.1" 💧 Light watering
Nov 6.5" 4" 2.5" 💧 Light watering
Dec 3.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Ouachita County). 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 4,781 GDD Excellent fit

Lemongrass Planting Timeline — Ouachita County, AR

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors February 2 Feb 2 – Feb 16
Transplant Outdoors April 6 Apr 6 – Apr 20
Direct Sow March 30 Mar 30 – Apr 20
Harvest June 22 Jun 22 – Sep 21

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

75–120 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 8a

📆 Growing Season

225 days in Ouachita County

Growing Tips for Lemongrass in Ouachita County

Direct sow Lemongrass outdoors after March 23 in Ouachita County when soil has warmed and frost danger has passed.

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 Ouachita County, AR?

Ouachita County is in Zone 8a with an average last frost of March 23. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.

What planting zone is Ouachita County, AR?

Ouachita County, Arkansas is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 3.

🌱

Your Ouachita County Garden Planner — Free

A 24-page printable planner built for Ouachita County (Zone 8a). 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 Ouachita County, AR. 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.