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When to Plant Lemongrass in Miller County, AR

Miller County, Arkansas Zone 8b May

May in the garden — Miller County, Arkansas

Your garden in Miller County, Arkansas is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 21
Avg. first frost November 12
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Sow lemongrass in trays indoors

    Label every cell. You will absolutely forget which is which otherwise.

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.

Miller County, Arkansas is in USDA Zone 8b. The average last spring frost is March 21 and the first fall frost is November 12, giving you a growing season of approximately 236 days.

At an elevation of 266 feet, Miller County receives approximately 50.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Lemongrass during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemongrass root diseases.

Miller County, AR (Zone 8b) Long season
236 days
Last Spring Frost March 21
236 growing days
First Fall Frost November 12

Miller County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (51 days to spare)
Start indoors: Jan 22 Transplant: Mar 26 🍅 Harvest: Jun 11 – Sep 10
Recommended (50%) ✓ Fits season (54 days to spare)
Start indoors: Jan 31 Transplant: Apr 4 🍅 Harvest: Jun 20 – Sep 19
Safe Start (90%) ✓ Fits season (47 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 Miller County

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

Soil pH

Your soil pH (5.3–7.1) overlaps with Lemongrass's range (5.5–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.2%). 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 236-day season

Sow every 8.6 weeks. Last sowing by Jul 15 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.7″/week
Watering frequency 2-3 times/week
Season total 1,520 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 3.7" 0" ❄️ Dormant
Feb 3.3" 0" ❄️ Dormant
Mar 6.5" 5" 1.5" 💧 Light watering
Apr 6.5" 3.9" 2.6" 💧 Light watering
May 6.5" 4" 2.5" 💧 Light watering
Jun 6.5" 4.6" 1.9" 💧 Light watering
Jul 6.5" 5.7" 0.8" 💧 Light watering
Aug 6.5" 5.1" 1.4" 💧 Light watering
Sep 6.5" 4.1" 2.4" 💧 Light watering
Oct 6.5" 3.4" 3.1" 💧 Light watering
Nov 6.5" 4.1" 2.4" 💧 Light watering
Dec 3.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Miller 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 ~1,926 GDD — county provides 4,661 GDD Excellent fit

Lemongrass Planting Timeline — Miller County, AR

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors January 31 Jan 31 – Feb 14
Transplant Outdoors April 4 Apr 4 – Apr 18
Direct Sow March 28 Mar 28 – Apr 18
Harvest June 20 Jun 20 – Sep 19

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
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 · 2-3 times/week

📅 Days to Maturity

75–120 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

236 days in Miller County

Growing Tips for Lemongrass in Miller County

Direct sow Lemongrass outdoors after March 21 in Miller 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 Miller County, AR?

Miller County is in Zone 8b with an average last frost of March 21. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.

What planting zone is Miller County, AR?

Miller County, Arkansas is in USDA Hardiness Zone 8b. The average last spring frost is March 21 and first fall frost is November 12.

🌱

Your Miller County Garden Planner — Free

A 24-page printable planner built for Miller County (Zone 8b). 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 Miller 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.