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When to Plant Lemon Balm in Monroe County, AL

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.

Monroe County, Alabama is in USDA Zone 8a. The average last spring frost is March 14 and the first fall frost is November 14, giving you a growing season of approximately 245 days.

At an elevation of 177 feet, Monroe County receives approximately 51.5 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96ยฐF, so Lemon Balm may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Lemon Balm, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemon Balm root diseases.

Monroe County, AL (Zone 8a) Long season
245 days
Last Spring Frost March 14
245 growing days
First Fall Frost November 14

Monroe County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (125 days to spare)
Transplant: Mar 13 🍅 Harvest: May 15 – Jul 3
Recommended (50%) ✓ Fits season (126 days to spare)
Transplant: Mar 21 🍅 Harvest: May 23 – Jul 11
Safe Start (90%) ✓ Fits season (126 days to spare)
Transplant: Apr 7 🍅 Harvest: Jun 9 – Jul 28

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 255 gal / 100 sq ft
Lemon Balm needs ~1,430 GDD — county provides 5,390 GDD Excellent fit

Lemon Balm Planting Timeline โ€” Monroe County, AL

Lemon Balm Planting Calendar

Activity When Date Range
Transplant Outdoors March 21 Mar 21 โ€“ Apr 4
Harvest May 23 May 23 โ€“ Jul 11

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

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

60โ€“70 days

Soil pH

5.5 โ€“ 7.5

USDA Zone

Zone 8a

Growing Season

245 days

Growing Tips for Monroe County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Lemon Balm in Monroe County, AL?

Monroe County is in Zone 8a with an average last frost of March 14. Plan your Lemon Balm planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Monroe County, AL?

Monroe County, Alabama is in USDA Hardiness Zone 8a. The average last spring frost is March 14 and first fall frost is November 14.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Monroe 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 Monroe County, AL. Local conditions may vary. Last updated: April 2026.