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When to Plant Lemongrass in Jackson County, TX

Jackson County, Texas Zone 9b May

May in the garden — Jackson 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 21
Avg. first frost December 5
Soil temp (4") 76°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. Harvest lemongrass as they ripen

    If you can't use it all right away, check the food-preservation section of your planner.

To set up a strong June, finish these tasks
  • 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.

Jackson County, Texas is in USDA Zone 9b. The average last spring frost is February 21 and the first fall frost is December 5, giving you a growing season of approximately 287 days.

At an elevation of 286 feet, Jackson County receives approximately 64.3 inches of rainfall annually with predominantly loam soil. Summer highs average 103°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.

Jackson County, TX (Zone 9b) Year-round
287 days
Last Spring Frost February 21
287 growing days
First Fall Frost December 5

Jackson County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (114 days to spare)
Start indoors: Dec 28 Transplant: Feb 15 🍅 Harvest: May 3 – Aug 2
Recommended (50%) ✓ Fits season (112 days to spare)
Start indoors: Jan 10 Transplant: Feb 28 🍅 Harvest: May 16 – Aug 15
Safe Start (90%) ✓ Fits season (104 days to spare)
Start indoors: Jan 31 Transplant: Mar 21 🍅 Harvest: Jun 6 – Sep 5

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 Jackson County

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

Soil pH

Your soil pH (6.5–7.2) is within Lemongrass's preferred range (5.5–7.5).

Soil Texture

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

Drainage

Lemongrass is a heavy drinker but your soil drains very quickly. Mulch heavily and consider drip irrigation.

Organic Matter

Organic matter is moderate (2.0%). 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 287-day season

Sow every 8.6 weeks. Last sowing by Aug 07 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
1.0″/week
Watering frequency 2-3 times/week
Season total 2,595 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" 2.1" 4.4" 🚿 Regular watering
Mar 6.5" 3.9" 2.6" 💧 Light watering
Apr 6.5" 6.5" 0" ✅ Rainfall sufficient
May 6.5" 9" 0" ✅ Rainfall sufficient
Jun 6.5" 10.4" 0" ✅ Rainfall sufficient
Jul 6.5" 7.9" 0" ✅ Rainfall sufficient
Aug 6.5" 8" 0" ✅ Rainfall sufficient
Sep 6.5" 6" 0.5" 💧 Light watering
Oct 6.5" 4.8" 1.7" 💧 Light watering
Nov 6.5" 2.3" 4.2" 🚿 Regular watering
Dec 6.5" 1.7" 4.8" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Jackson 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 ~2,657 GDD — county provides 7,848 GDD Excellent fit

Lemongrass Planting Timeline — Jackson County, TX

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors January 10 Jan 10 – Jan 24
Transplant Outdoors February 28 Feb 28 – Mar 14
Direct Sow February 28 Feb 28 – Mar 21
Harvest May 16 May 16 – Aug 15

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

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: ideal

🗺️ USDA Zone

Zone 9b

📆 Growing Season

287 days in Jackson County

Growing Tips for Lemongrass in Jackson County

Direct sow Lemongrass outdoors after February 21 in Jackson County when soil has warmed and frost danger has passed.

With summer highs reaching 103°F in Jackson 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 Jackson County, TX?

Jackson County is in Zone 9b with an average last frost of February 21. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jackson County, TX?

Jackson County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 21 and first fall frost is December 5.

🌱

Your Jackson County Garden Planner — Free

A 24-page printable planner built for Jackson County (Zone 9b). 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 Jackson 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.