Blog

When to Plant Lemongrass in Webb County, TX

Webb County, Texas Zone 9b July

What to do in July

Your garden in Webb County, Texas is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost February 9
Avg. first frost December 9
Soil temp (4") 85°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. It's harvest week for lemongrass

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

Before August arrives, get these ready
  • First harvests: lemongrass

Instant PDF download. No spam, unsubscribe any time.

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.

Webb County, Texas is in USDA Zone 9b. The average last spring frost is February 9 and the first fall frost is December 9, giving you a growing season of approximately 303 days.

At an elevation of 3,543 feet, Webb County receives approximately 50.9 inches of rainfall annually with predominantly loam soil. Summer highs average 95°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.

Webb County, TX (Zone 9b) Year-round
303 days
Last Spring Frost February 9
303 growing days
First Fall Frost December 9

Webb County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.7

Drainage

Well Drained

Lemongrass Planting Risk Windows

Early Start (70% safe) ✓ Fits season (142 days to spare)
Start indoors: Dec 8 Transplant: Jan 26 🍅 Harvest: Apr 13 – Jul 13
Recommended (50%) ✓ Fits season (128 days to spare)
Start indoors: Dec 29 Transplant: Feb 16 🍅 Harvest: May 4 – Aug 3
Safe Start (90%) ✓ Fits season (116 days to spare)
Start indoors: Jan 22 Transplant: Mar 12 🍅 Harvest: May 28 – Aug 27

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 Webb 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 Webb County is excellent for Lemongrass — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.3%). 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 303-day season

Sow every 8.6 weeks. Last sowing by Aug 11 to harvest before frost.

Lemongrass Water Budget

Plant needs
1.5″/week
Rainfall provides
0.7″/week
You supply
1.0″/week
Watering frequency 2-3 times/week
Season total 2,587 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 1.3" 0" ❄️ Dormant
Feb 6.5" 1.9" 4.6" 🚿 Regular watering
Mar 6.5" 2.8" 3.7" 🚿 Regular watering
Apr 6.5" 5" 1.5" 💧 Light watering
May 6.5" 8.3" 0" ✅ Rainfall sufficient
Jun 6.5" 7.6" 0" ✅ Rainfall sufficient
Jul 6.5" 5.9" 0.6" 💧 Light watering
Aug 6.5" 6.4" 0.1" 💧 Light watering
Sep 6.5" 5.2" 1.3" 💧 Light watering
Oct 6.5" 3.4" 3.1" 💧 Light watering
Nov 6.5" 1.7" 4.8" 🚿 Regular watering
Dec 6.5" 1.5" 5" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Webb 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 ~2,072 GDD — county provides 6,460 GDD Excellent fit

Lemongrass Planting Timeline — Webb County, TX

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors December 29 Dec 29 – Jan 12
Transplant Outdoors February 16 Feb 16 – Mar 2
Direct Sow February 16 Feb 16 – Mar 9
Harvest May 4 May 4 – Aug 3

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 Start Indoors

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 9b

📆 Growing Season

303 days in Webb County

Growing Tips for Lemongrass in Webb County

Direct sow Lemongrass outdoors after February 09 in Webb 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 Webb County, TX?

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

What planting zone is Webb County, TX?

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

🌱

Your Webb County Garden Planner — Free

A 22-page printable planner built for Webb 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Webb County, TX. Local conditions may vary. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.