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When to Plant Thyme in McNairy County, TN

Thyme is a low-growing perennial herb with tiny, aromatic leaves and a warm, earthy flavor. It is one of the most versatile culinary and medicinal herbs.

McNairy County, Tennessee is in USDA Zone 7b. The average last spring frost is March 31 and the first fall frost is October 28, giving you a growing season of approximately 211 days.

At an elevation of 3,207 feet, McNairy County receives approximately 46 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89Β°F, providing good warmth for Thyme during the growing season.

McNairy County, TN (Zone 7b) Long season
211 days
Last Spring Frost March 31
211 growing days
First Fall Frost October 28

McNairy County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-7

Drainage

Well Drained

Monthly Watering Guide for Thyme

Thyme needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Thyme Needs Rainfall You Supplement Action
Jan β€” 3.6" 0" ❄️ Dormant
Feb β€” 4.1" 0" ❄️ Dormant
Mar 4.3" 4.3" 0" βœ… Rainfall sufficient
Apr 4.3" 3.2" 1.1" πŸ’§ Light watering
May 4.3" 3.9" 0.4" πŸ’§ Light watering
Jun 4.3" 4.2" 0.1" πŸ’§ Light watering
Jul 4.3" 5" 0" βœ… Rainfall sufficient
Aug 4.3" 4.8" 0" βœ… Rainfall sufficient
Sep 4.3" 3.2" 1.1" πŸ’§ Light watering
Oct 4.3" 3.1" 1.2" πŸ’§ Light watering
Nov β€” 3.2" 0" ❄️ Dormant
Dec β€” 3.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Oct in McNairy County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Thyme Planting Timeline β€” McNairy County, TN

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors April 7 Apr 7 – Apr 21
Harvest June 16 Jun 16 – Aug 18

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

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Low β€” drought tolerant

πŸ“… Days to Maturity

70–90 days

πŸ§ͺ Soil pH

Needs 6–8 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 7b

πŸ“† Growing Season

211 days in McNairy County

Growing Tips for McNairy County

Start from seed, cuttings, or divisions. Plant in well-drained, lean soil. Prune lightly after flowering. Replace plants every 3-4 years when they become woody.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Thyme in McNairy County, TN?

McNairy County is in Zone 7b with an average last frost of March 31. Plan your Thyme planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is McNairy County, TN?

McNairy County, Tennessee is in USDA Hardiness Zone 7b. The average last spring frost is March 31 and first fall frost is October 28.

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Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help McNairy County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for McNairy County, TN. Local conditions may vary. Last updated: April 2026.