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When to Plant Lemongrass in Wharton County, TX

Wharton County, Texas Zone 9a May

May in the garden — Wharton County, Texas

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 February 17
Avg. first frost December 6
Soil temp (4") 76°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. It's harvest week for lemongrass

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

Before June arrives, get these ready
  • 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.

Wharton County, Texas is in USDA Zone 9a. The average last spring frost is February 17 and the first fall frost is December 6, giving you a growing season of approximately 292 days.

At an elevation of 207 feet, Wharton County receives approximately 64.8 inches of rainfall annually with predominantly loam soil. Summer highs average 98°F, so Lemongrass may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemongrass root diseases.

Wharton County, TX (Zone 9a) Year-round
292 days
Last Spring Frost February 17
292 growing days
First Fall Frost December 6
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Wharton County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (120 days to spare)
Start indoors: Dec 25 Transplant: Feb 12 🍅 Harvest: Apr 30 – Jul 30
Recommended (50%) ✓ Fits season (117 days to spare)
Start indoors: Jan 6 Transplant: Feb 24 🍅 Harvest: May 12 – Aug 11
Safe Start (90%) ✓ Fits season (109 days to spare)
Start indoors: Jan 29 Transplant: Mar 19 🍅 Harvest: Jun 4 – Sep 3

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 Wharton County

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

Soil pH

Your soil pH (6.6–7.7) overlaps with Lemongrass's range (5.5–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Lemongrass.

How to Plant Lemongrass

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

Succession Planting Lemongrass

4
successive plantings in your 292-day season

Sow every 8.6 weeks. Last sowing by Aug 08 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 1,489 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 1.7" 0" ❄️ Dormant
Feb 6.5" 2.2" 4.3" 🚿 Regular watering
Mar 6.5" 4.6" 1.9" 💧 Light watering
Apr 6.5" 6.6" 0" ✅ Rainfall sufficient
May 6.5" 9" 0" ✅ Rainfall sufficient
Jun 6.5" 10.4" 0" ✅ Rainfall sufficient
Jul 6.5" 8.4" 0" ✅ Rainfall sufficient
Aug 6.5" 7.4" 0" ✅ Rainfall sufficient
Sep 6.5" 5.7" 0.8" 💧 Light watering
Oct 6.5" 4.4" 2.1" 💧 Light watering
Nov 6.5" 2.4" 4.1" 🚿 Regular watering
Dec 6.5" 1.9" 4.6" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Wharton 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 ~2,291 GDD — county provides 6,885 GDD Excellent fit

Lemongrass Planting Timeline — Wharton County, TX

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors January 6 Jan 6 – Jan 20
Transplant Outdoors February 24 Feb 24 – Mar 10
Direct Sow February 24 Feb 24 – Mar 17
Harvest May 12 May 12 – Aug 11

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
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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: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

292 days in Wharton County

Growing Tips for Lemongrass in Wharton County

Direct sow Lemongrass outdoors after February 17 in Wharton County when soil has warmed and frost danger has passed.

With summer highs reaching 98°F in Wharton County, provide afternoon shade for Lemongrass and water deeply in the morning.

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 Wharton County, TX?

Wharton County is in Zone 9a with an average last frost of February 17. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.

What planting zone is Wharton County, TX?

Wharton County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 17 and first fall frost is December 6.

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Your Wharton County Garden Planner — Free

A 24-page printable planner built for Wharton County (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 Wharton County, TX. 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.