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When to Plant Lemon Balm in McCulloch County, TX

McCulloch County, Texas Zone 8b May

What to do in May

We've pulled the most time-sensitive tasks for McCulloch County, Texas this May and put them front and centre. Tackle them in order.

Avg. last frost March 17
Avg. first frost November 16
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Collect lemon balm at their peak

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Get ahead of June
  • 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.

McCulloch County, Texas is in USDA Zone 8b. The average last spring frost is March 17 and the first fall frost is November 16, giving you a growing season of approximately 244 days.

At an elevation of 1,250 feet, McCulloch County receives approximately 60.1 inches of rainfall annually with predominantly loam soil. Summer highs average 96°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.

McCulloch County, TX (Zone 8b) Long season
244 days
Last Spring Frost March 17
244 growing days
First Fall Frost November 16

McCulloch County Soil Profile

Soil Type

Loam

Soil pH

6.8-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (129 days to spare)
Transplant: Mar 15 🍅 Harvest: May 17 – Jul 5
Recommended (50%) ✓ Fits season (125 days to spare)
Transplant: Mar 24 🍅 Harvest: May 26 – Jul 14
Safe Start (90%) ✓ Fits season (122 days to spare)
Transplant: Apr 15 🍅 Harvest: Jun 17 – Aug 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 McCulloch County

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

Soil pH

Your soil pH (6.8–7.7) overlaps with Lemon Balm's range (5.5–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Lemon Balm

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

Succession Planting Lemon Balm

4
successive plantings in your 244-day season

Sow every 6.9 weeks. Last sowing by Sep 07 to harvest before frost.

Plant Water Budget

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

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 1.8" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 2.2" 3.5" 0" ✅ Rainfall sufficient
Apr 2.2" 6.6" 0" ✅ Rainfall sufficient
May 2.2" 9.8" 0" ✅ Rainfall sufficient
Jun 2.2" 8.6" 0" ✅ Rainfall sufficient
Jul 2.2" 8" 0" ✅ Rainfall sufficient
Aug 2.2" 7" 0" ✅ Rainfall sufficient
Sep 2.2" 5.1" 0" ✅ Rainfall sufficient
Oct 2.2" 3.9" 0" ✅ Rainfall sufficient
Nov 2.2" 2.2" 0" ✅ Rainfall sufficient
Dec 1.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in McCulloch 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 ~1,430 GDD — county provides 5,368 GDD Excellent fit

Lemon Balm Planting Timeline — McCulloch County, TX

Lemon Balm Planting Calendar

Activity When Date Range
Transplant Outdoors March 24 Mar 24 – Apr 7
Harvest May 26 May 26 – Jul 14

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

Month-by-Month Timeline

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

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 8b

📆 Growing Season

244 days in McCulloch County

Growing Tips for Lemon Balm in McCulloch County

Direct sow Lemon Balm outdoors after March 17 in McCulloch County when soil has warmed and frost danger has passed.

With summer highs reaching 96°F in McCulloch County, provide afternoon shade for Lemon Balm and water deeply in the morning.

With 60" of annual rainfall in McCulloch 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 McCulloch County, TX?

McCulloch County is in Zone 8b with an average last frost of March 17. Plan your Lemon Balm planting based on this frost date — see the calendar above for exact timing.

What planting zone is McCulloch County, TX?

McCulloch County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 17 and first fall frost is November 16.

🌱

Your McCulloch County Garden Planner — Free

A 24-page printable planner built for McCulloch 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 McCulloch 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.