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When to plant Thai Basil in Lee County, KY

Aim to plant Thai Basil in Lee County on or after April 25; the window stays open through May 16. Lee County's 186-day frost-free season gives you enough for a full main crop and a short fall succession.

When to Plant Thai Basil in Lee County, KY

Thai basil has a distinctive anise-licorice flavor with sturdy purple stems and small leaves. It is essential in Thai, Vietnamese, and other Southeast Asian cuisines.

Lee County, Kentucky is in USDA Zone 6b. The average last spring frost is April 18 and the first fall frost is October 21, giving you a growing season of approximately 186 days.

At an elevation of 3,433 feet, Lee County receives approximately 52.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Thai Basil during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Thai Basil root diseases.

Lee County, KY (Zone 6b) Moderate season
186 days
Last Spring Frost April 18
186 growing days
First Fall Frost October 21

Lee County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Thai Basil Planting Timeline — Lee County, KY

Thai Basil Planting Calendar

Activity When Date Range
Start Indoors February 28 Feb 28 – Mar 14
Transplant Outdoors May 2 May 2 – May 16
Direct Sow April 25 Apr 25 – May 16
Harvest June 27 Jun 27 – Aug 29

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

50–75 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 6b

📆 Growing Season

186 days in Lee County

Growing Tips for Lee County

Start seeds indoors or direct sow after last frost. Thai basil holds up better to heat in cooking than sweet basil. Pinch flowers to prolong leaf production.

Companion Planting

Good Companions

Avoid Planting Near

  • Rue
  • Sage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Thai Basil in Lee County, KY?

Lee County is in Zone 6b with an average last frost of April 18. Plan your Thai Basil planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lee County, KY?

Lee County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 18 and first fall frost is October 21.

When should I plant Thai Basil in Lee County, KY?

In Lee County, KY, plant Thai Basil after the last frost (around April 18) and before the first frost (around October 21). Best results when soil holds above 50°F.

What growing zone is Lee County, KY for Thai Basil?

Lee County sits in USDA Zone 6b. Thai Basil grows reliably in zones 4a through 11b, so it's a good fit here.

Can Thai Basil grow in Lee County's climate?

Yes — Thai Basil grows well in Lee County's temperate climate. Lee County averages a 186-day frost-free season, with last frost around April 18 and first frost around October 21.

🌱

Your Lee County Garden Planner — Free

A 22-page printable planner built for Lee County (Zone 6b). 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 Lee County, KY. Local conditions may vary. Last updated: August 2026.

Sources & credits

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