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When to Plant Lemon Balm in Calhoun County, TX

Calhoun County, Texas Zone 9b May

Your May planting checklist for Calhoun County, Texas

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

Avg. last frost February 16
Avg. first frost December 7
Soil temp (4") 76°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. Start harvesting lemon balm

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

To set up a strong June, finish these tasks
  • First harvests: lemon balm

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Lemon balm is a vigorous perennial herb with bright green, lemon-scented leaves. It makes a refreshing tea and is easy to grow but can spread aggressively.

Calhoun County, Texas is in USDA Zone 9b. The average last spring frost is February 16 and the first fall frost is December 7, giving you a growing season of approximately 294 days.

At an elevation of 215 feet, Calhoun County receives approximately 59.5 inches of rainfall annually with predominantly loam soil. Summer highs average 99°F, so Lemon Balm may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemon Balm root diseases.

Calhoun County, TX (Zone 9b) Year-round
294 days
Last Spring Frost February 16
294 growing days
First Fall Frost December 7
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Calhoun County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (192 days to spare)
Transplant: Jan 30 🍅 Harvest: Apr 3 – May 22
Recommended (50%) ✓ Fits season (175 days to spare)
Transplant: Feb 23 🍅 Harvest: Apr 27 – Jun 15
Safe Start (90%) ✓ Fits season (166 days to spare)
Transplant: Mar 17 🍅 Harvest: May 19 – Jul 7

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 Calhoun County

How your county's soil matches Lemon Balm's growing requirements.

Soil pH

Your soil pH (6.2–7.8) overlaps with Lemon Balm's range (5.5–7.5), though not a perfect match.

Soil Texture

The loam soil in Calhoun County is excellent for Lemon Balm — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Lemon Balm.

How to Plant Lemon Balm

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

Succession Planting Lemon Balm

5
successive plantings in your 294-day season

Sow every 6.9 weeks. Last sowing by Sep 28 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Lemon Balm

Lemon Balm needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Lemon Balm Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 2.2" 2.2" 0" ✅ Rainfall sufficient
Mar 2.2" 4.6" 0" ✅ Rainfall sufficient
Apr 2.2" 6.7" 0" ✅ Rainfall sufficient
May 2.2" 8.5" 0" ✅ Rainfall sufficient
Jun 2.2" 9.1" 0" ✅ Rainfall sufficient
Jul 2.2" 7.3" 0" ✅ Rainfall sufficient
Aug 2.2" 6.6" 0" ✅ Rainfall sufficient
Sep 2.2" 5.2" 0" ✅ Rainfall sufficient
Oct 2.2" 3.9" 0" ✅ Rainfall sufficient
Nov 2.2" 2.2" 0" ✅ Rainfall sufficient
Dec 2.2" 1.9" 0.3" 💧 Light watering

Water needs are for active growing months only (Feb–Dec in Calhoun County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Lemon Balm 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.

Lemon Balm needs ~1,576 GDD — county provides 7,153 GDD Excellent fit

Lemon Balm Planting Timeline — Calhoun County, TX

Lemon Balm Planting Calendar

Activity When Date Range
Transplant Outdoors February 23 Feb 23 – Mar 9
Harvest April 27 Apr 27 – Jun 15

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

Month-by-Month Timeline

MonthActivities
January
February Transplant Outdoors
March Transplant Outdoors
April Harvest
May Harvest
June Harvest
July
August
September
October
November
December
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Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–70 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 9b

📆 Growing Season

294 days in Calhoun County

Growing Tips for Lemon Balm in Calhoun County

Direct sow Lemon Balm outdoors after February 16 in Calhoun County when soil has warmed and frost danger has passed.

With summer highs reaching 99°F in Calhoun County, provide afternoon shade for Lemon Balm and water deeply in the morning.

With 60" of annual rainfall in Calhoun County, ensure good drainage for Lemon Balm — excess moisture can promote root rot and fungal diseases.

General growing tips

Start from seed, cuttings, or divisions. Contain in pots or use barriers to prevent spreading. Harvest frequently to keep plants bushy and prevent flowering.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lemon Balm in Calhoun County, TX?

Calhoun County is in Zone 9b with an average last frost of February 16. Plan your Lemon Balm planting based on this frost date — see the calendar above for exact timing.

What planting zone is Calhoun County, TX?

Calhoun County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 16 and first fall frost is December 7.

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Your Calhoun County Garden Planner — Free

A 24-page printable planner built for Calhoun 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 Calhoun 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.