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When to Plant Lemongrass in Matagorda County, TX

Matagorda County, Texas Zone 9b May

Top priorities for Matagorda County, Texas gardeners in May

Here's what deserves your attention in Matagorda County, Texas this month. Everything below is tailored to Zone 9b and timed around your local frost dates.

Avg. last frost February 19
Avg. first frost December 6
Soil temp (4") 76°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. Start harvesting lemongrass

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Get ahead of 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.

Matagorda County, Texas is in USDA Zone 9b. The average last spring frost is February 19 and the first fall frost is December 6, giving you a growing season of approximately 290 days.

At an elevation of 161 feet, Matagorda County receives approximately 57.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Lemongrass may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Lemongrass will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemongrass root diseases.

Matagorda County, TX (Zone 9b) Year-round
290 days
Last Spring Frost February 19
290 growing days
First Fall Frost December 6
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Matagorda County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.4-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (120 days to spare)
Start indoors: Dec 27 Transplant: Feb 14 🍅 Harvest: May 2 – Aug 1
Recommended (50%) ✓ Fits season (115 days to spare)
Start indoors: Jan 8 Transplant: Feb 26 🍅 Harvest: May 14 – Aug 13
Safe Start (90%) ✓ Fits season (106 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 Matagorda County

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

Soil pH

Your soil pH (5.4–6.5) overlaps with Lemongrass's range (5.5–7.5), though not a perfect match.

Soil Texture

Sandy soil in Matagorda County warms quickly in spring but drains fast. Lemongrass will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Lemongrass.

How to Plant Lemongrass

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

Succession Planting Lemongrass

4
successive plantings in your 290-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
0.8″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,750 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 1.4" 0" ❄️ Dormant
Feb 6.5" 1.9" 4.6" 🚿 Regular watering
Mar 6.5" 3.4" 3.1" 💧 Light watering
Apr 6.5" 6.2" 0.3" 💧 Light watering
May 6.5" 7.9" 0" ✅ Rainfall sufficient
Jun 6.5" 9.4" 0" ✅ Rainfall sufficient
Jul 6.5" 7.8" 0" ✅ Rainfall sufficient
Aug 6.5" 6.9" 0" ✅ Rainfall sufficient
Sep 6.5" 5.3" 1.2" 💧 Light watering
Oct 6.5" 3.7" 2.8" 💧 Light watering
Nov 6.5" 1.8" 4.7" 🚿 Regular watering
Dec 6.5" 1.4" 5.1" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Matagorda 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 6,183 GDD Excellent fit

Lemongrass Planting Timeline — Matagorda County, TX

Lemongrass Planting Calendar

Activity When Date Range
Start Indoors January 8 Jan 8 – Jan 22
Transplant Outdoors February 26 Feb 26 – Mar 12
Direct Sow February 26 Feb 26 – Mar 19
Harvest May 14 May 14 – Aug 13

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 9b

📆 Growing Season

290 days in Matagorda County

Growing Tips for Lemongrass in Matagorda County

Direct sow Lemongrass outdoors after February 19 in Matagorda County when soil has warmed and frost danger has passed.

Sandy soil in Matagorda County dries quickly — mulch Lemongrass with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Matagorda County, TX?

Matagorda County is in Zone 9b with an average last frost of February 19. Plan your Lemongrass planting based on this frost date — see the calendar above for exact timing.

What planting zone is Matagorda County, TX?

Matagorda County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 19 and first fall frost is December 6.

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Your Matagorda County Garden Planner — Free

A 24-page printable planner built for Matagorda 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 Matagorda 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.