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When to Plant Lemon Balm in Morris County, TX

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.

Morris County, Texas is in USDA Zone 8a. The average last spring frost is March 12 and the first fall frost is November 11, giving you a growing season of approximately 244 days.

At an elevation of 185 feet, Morris County receives approximately 69.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96ยฐF, so Lemon Balm may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Lemon Balm will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemon Balm root diseases.

Morris County, TX (Zone 8a) Long season
244 days
Last Spring Frost March 12
244 growing days
First Fall Frost November 11

Morris County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Transplant: Mar 13 🍅 Harvest: May 15 – Jul 3
Recommended (50%) ✓ Fits season (125 days to spare)
Transplant: Mar 19 🍅 Harvest: May 21 – Jul 9
Safe Start (90%) ✓ Fits season (120 days to spare)
Transplant: Apr 13 🍅 Harvest: Jun 15 – Aug 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 Morris County

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

Soil pH

Your soil pH (5.5โ€“6.6) is within Lemon Balm's preferred range (5.5โ€“7.5).

Soil Texture

Sandy soil in Morris County warms quickly in spring but drains fast. Lemon Balm 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 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 02 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
1.2″/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 โ€” 1.7" 0" โ„๏ธ Dormant
Feb โ€” 2.4" 0" โ„๏ธ Dormant
Mar 2.2" 4" 0" โœ… Rainfall sufficient
Apr 2.2" 7.4" 0" โœ… Rainfall sufficient
May 2.2" 11.5" 0" โœ… Rainfall sufficient
Jun 2.2" 11.4" 0" โœ… Rainfall sufficient
Jul 2.2" 8.2" 0" โœ… Rainfall sufficient
Aug 2.2" 9.1" 0" โœ… Rainfall sufficient
Sep 2.2" 6.6" 0" โœ… Rainfall sufficient
Oct 2.2" 3.7" 0" โœ… Rainfall sufficient
Nov 2.2" 2.1" 0.1" ๐Ÿ’ง Light watering
Dec โ€” 1.8" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Morris County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 โ€” Morris County, TX

Lemon Balm Planting Calendar

Activity When Date Range
Transplant Outdoors March 19 Mar 19 โ€“ Apr 2
Harvest May 21 May 21 โ€“ Jul 9

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Partial Shade (3-6 hours)

๐Ÿ’ง Water

0.5"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

60โ€“70 days

๐Ÿงช Soil pH

Needs 5.5โ€“7.5 ยท Your soil: ideal

๐Ÿ—บ๏ธ USDA Zone

Zone 8a

๐Ÿ“† Growing Season

244 days in Morris County

Growing Tips for Lemon Balm in Morris County

Direct sow Lemon Balm outdoors after March 12 in Morris County when soil has warmed and frost danger has passed.

Sandy soil in Morris County dries quickly โ€” mulch Lemon Balm with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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

With 70" of annual rainfall in Morris County, ensure good drainage for Lemon Balm โ€” 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 Morris County, TX?

Morris County is in Zone 8a with an average last frost of March 12. Plan your Lemon Balm planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Morris County, TX?

Morris County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 12 and first fall frost is November 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Morris County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.

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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 Morris County, TX. Local conditions may vary. Last updated: April 2026.