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When to Plant Lemongrass in Clayton County, GA

Clayton County, Georgia Zone 8b May

Your May gardening checklist

We've pulled the most time-sensitive tasks for Clayton County, Georgia this May and put them front and centre. Tackle them in order.

Avg. last frost March 28
Avg. first frost November 3
Soil temp (4") 70°F
Watering Low
Pest pressure Moderate
Daylight 13.7 hrs
  1. Start lemongrass under lights

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

Looking ahead to June
  • 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.

Clayton County, Georgia is in USDA Zone 8b. The average last spring frost is March 28 and the first fall frost is November 3, giving you a growing season of approximately 220 days.

At an elevation of 136 feet, Clayton County receives approximately 56.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Lemongrass during the growing season. Clay soil retains moisture well for Lemongrass, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemongrass root diseases.

Clayton County, GA (Zone 8b) Long season
220 days
Last Spring Frost March 28
220 growing days
First Fall Frost November 3
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Clayton County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (39 days to spare)
Start indoors: Feb 1 Transplant: Apr 5 🍅 Harvest: Jun 21 – Sep 20
Recommended (50%) ✓ Fits season (38 days to spare)
Start indoors: Feb 7 Transplant: Apr 11 🍅 Harvest: Jun 27 – Sep 26
Safe Start (90%) ✓ Fits season (33 days to spare)
Start indoors: Feb 28 Transplant: May 2 🍅 Harvest: Jul 18 – Oct 17

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 Clayton County

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

Soil pH

Your soil pH (5.6–6.8) is within Lemongrass's preferred range (5.5–7.5).

Soil Texture

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

Organic Matter

Organic matter is moderate (2.7%). 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 220-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
1.1″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 836 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" 0" ❄️ Dormant
Feb 4.5" 0" ❄️ Dormant
Mar 6.5" 5.1" 1.4" 💧 Light watering
Apr 6.5" 4.1" 2.4" 💧 Light watering
May 6.5" 5.1" 1.4" 💧 Light watering
Jun 6.5" 4.4" 2.1" 💧 Light watering
Jul 6.5" 6.3" 0.2" 💧 Light watering
Aug 6.5" 5.6" 0.9" 💧 Light watering
Sep 6.5" 4.1" 2.4" 💧 Light watering
Oct 6.5" 4.1" 2.4" 💧 Light watering
Nov 6.5" 3.7" 2.8" 💧 Light watering
Dec 4.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Clayton 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 ~1,852 GDD — county provides 4,180 GDD Excellent fit

Lemongrass Planting Timeline — Clayton County, GA

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors February 7 Feb 7 – Feb 21
Transplant Outdoors April 11 Apr 11 – Apr 25
Direct Sow April 4 Apr 4 – Apr 25
Harvest June 27 Jun 27 – Sep 26

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March
April Transplant Outdoors Direct Sow
May
June Harvest
July Harvest
August Harvest
September Harvest
October
November
December
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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 8b

📆 Growing Season

220 days in Clayton County

Growing Tips for Lemongrass in Clayton County

Direct sow Lemongrass outdoors after March 28 in Clayton County when soil has warmed and frost danger has passed.

With Clayton County's clay soil (30% clay), work in 3-4 inches of compost before planting Lemongrass. Avoid tilling when soil is wet to prevent compaction.

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 Clayton County, GA?

Clayton County is in Zone 8b with an average last frost of March 28. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.

What planting zone is Clayton County, GA?

Clayton County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 28 and first fall frost is November 3.

🌱

Your Clayton County Garden Planner — Free

A 24-page printable planner built for Clayton 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 Clayton County, GA. 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.