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When to Plant Lemongrass in Hill County, TX

Hill County, Texas Zone 8b May

Your May game plan for Hill County, Texas

May is a pivotal month for Hill County, Texas gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 12
Avg. first frost November 19
Soil temp (4") 65°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
A few tasks this May that'll pay off in 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.

Hill County, Texas is in USDA Zone 8b. The average last spring frost is March 12 and the first fall frost is November 19, giving you a growing season of approximately 252 days.

At an elevation of 2,597 feet, Hill County receives approximately 54.7 inches of rainfall annually with predominantly clay soil. Summer highs average 93°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.

Hill County, TX (Zone 8b) Long season
252 days
Last Spring Frost March 12
252 growing days
First Fall Frost November 19
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Hill County Soil Profile

Soil Type

Clay

Soil pH

7.3-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (69 days to spare)
Start indoors: Jan 15 Transplant: Mar 19 🍅 Harvest: Jun 4 – Sep 3
Recommended (50%) ✓ Fits season (70 days to spare)
Start indoors: Jan 22 Transplant: Mar 26 🍅 Harvest: Jun 11 – Sep 10
Safe Start (90%) ✓ Fits season (57 days to spare)
Start indoors: Feb 17 Transplant: Apr 21 🍅 Harvest: Jul 7 – Oct 6

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 Hill County

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

Soil pH

Your soil pH (7.3–7.7) overlaps with Lemongrass's range (5.5–7.5), though not a perfect match.

Soil Texture

Your clay soil in Hill County is workable for Lemongrass. Add compost annually to improve structure.

Organic Matter

Organic matter is moderate (2.9%). 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 252-day season

Sow every 8.6 weeks. Last sowing by Jul 22 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 1,583 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 1.5" 0" ❄️ Dormant
Feb 1.5" 0" ❄️ Dormant
Mar 6.5" 3.6" 2.9" 💧 Light watering
Apr 6.5" 5.9" 0.6" 💧 Light watering
May 6.5" 6.7" 0" ✅ Rainfall sufficient
Jun 6.5" 9.7" 0" ✅ Rainfall sufficient
Jul 6.5" 7.3" 0" ✅ Rainfall sufficient
Aug 6.5" 7" 0" ✅ Rainfall sufficient
Sep 6.5" 4.8" 1.7" 💧 Light watering
Oct 6.5" 3.5" 3" 💧 Light watering
Nov 6.5" 2" 4.5" 🚿 Regular watering
Dec 1.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Hill 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 4,977 GDD Excellent fit

Lemongrass Planting Timeline — Hill County, TX

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors January 22 Jan 22 – Feb 5
Transplant Outdoors March 26 Mar 26 – Apr 9
Direct Sow March 19 Mar 19 – Apr 9
Harvest June 11 Jun 11 – Sep 10

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors
March Transplant Outdoors Direct Sow
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 · 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

252 days in Hill County

Growing Tips for Lemongrass in Hill County

Direct sow Lemongrass outdoors after March 12 in Hill County when soil has warmed and frost danger has passed.

With Hill County's clay soil (36% 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 Hill County, TX?

Hill County is in Zone 8b with an average last frost of March 12. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hill County, TX?

Hill County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 12 and first fall frost is November 19.

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Your Hill County Garden Planner — Free

A 24-page printable planner built for Hill 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 Hill 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.