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When to Plant Lemon Balm in Ouachita County, AR

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.

Ouachita County, Arkansas is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 3, giving you a growing season of approximately 225 days.

At an elevation of 591 feet, Ouachita County receives approximately 48.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 95ยฐF, so Lemon Balm may need afternoon shade and extra watering during peak heat.

Ouachita County, AR (Zone 8a) Long season
225 days
Last Spring Frost March 23
225 growing days
First Fall Frost November 3

Ouachita County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (111 days to spare)
Transplant: Mar 20 🍅 Harvest: May 22 – Jul 10
Recommended (50%) ✓ Fits season (106 days to spare)
Transplant: Mar 30 🍅 Harvest: Jun 1 – Jul 20
Safe Start (90%) ✓ Fits season (105 days to spare)
Transplant: Apr 21 🍅 Harvest: Jun 23 – Aug 11

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 178 gal / 100 sq ft
Lemon Balm needs ~1,381 GDD — county provides 4,781 GDD Excellent fit

Lemon Balm Planting Timeline โ€” Ouachita County, AR

Lemon Balm Planting Calendar

Activity When Date Range
Transplant Outdoors March 30 Mar 30 โ€“ Apr 13
Harvest June 1 Jun 1 โ€“ Jul 20

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 โ€”
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

225 days

Growing Tips for Ouachita 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 Ouachita County, AR?

Ouachita County is in Zone 8a with an average last frost of March 23. Plan your Lemon Balm planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Ouachita County, AR?

Ouachita County, Arkansas is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 3.

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Plan Your Garden with Confidence

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