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When to plant Thyme in Carson, MS

Carson's short 256-day growing season means one Thyme planting between March 15 and March 29. No fall crop in Zone 8b.

When to Plant Thyme in Carson, MS

Thyme
Jefferson Davis County, Mississippi Zone 8b August

What to do in August

August is a pivotal month for Jefferson Davis County, Mississippi gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 8
Avg. first frost November 19
Soil temp (4") 93°F
Watering Low
Pest pressure High
Daylight 13.2 hrs

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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.

Carson, Mississippi is in USDA Zone 8b. The average last spring frost is March 8 and the first fall frost is November 19, giving you a growing season of approximately 256 days.

At an elevation of 126 feet, Jefferson Davis County receives approximately 59.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93°F, providing good warmth for Thyme during the growing season. Clay soil retains moisture well for Thyme, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Thyme root diseases.

Carson, MS (Zone 8b) Long season
256 days
Last Spring Frost March 8
256 growing days
First Fall Frost November 19

Carson Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.4

Drainage

Well Drained

Thyme Planting Risk Windows

Early Start (70% safe) ✓ Fits season (117 days to spare)
Transplant: Mar 8 🍅 Harvest: May 17 – Jul 19
Recommended (50%) ✓ Fits season (116 days to spare)
Transplant: Mar 15 🍅 Harvest: May 24 – Jul 26
Safe Start (90%) ✓ Fits season (111 days to spare)
Transplant: Apr 3 🍅 Harvest: Jun 12 – Aug 14

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 Carson

How your county's soil matches Thyme's growing requirements.

Soil pH

Your soil pH (5.6–6.4) overlaps with Thyme's range (6.0–8.0), though not a perfect match.

Soil Texture

The clay loam soil in Jefferson Davis County is excellent for Thyme — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Thyme.

How to Plant Thyme

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Thyme

4
successive plantings in your 256-day season

Sow every 8 weeks. Last sowing by Aug 21 to harvest before frost.

Thyme Water Budget

Plant needs
0.3″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Thyme

Thyme needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.

Month Thyme Needs Rainfall You Supplement Action
Jan 5.3" 0" ❄️ Dormant
Feb 5" 0" ❄️ Dormant
Mar 1.3" 6" 0" ✅ Rainfall sufficient
Apr 1.3" 4.1" 0" ✅ Rainfall sufficient
May 1.3" 4.2" 0" ✅ Rainfall sufficient
Jun 1.3" 5" 0" ✅ Rainfall sufficient
Jul 1.3" 5.7" 0" ✅ Rainfall sufficient
Aug 1.3" 6.4" 0" ✅ Rainfall sufficient
Sep 1.3" 4.7" 0" ✅ Rainfall sufficient
Oct 1.3" 3.9" 0" ✅ Rainfall sufficient
Nov 1.3" 3.9" 0" ✅ Rainfall sufficient
Dec 5.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Jefferson Davis County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Thyme 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" — every day above 50°F 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.

Thyme needs ~1,580 GDD — county provides 5,056 GDD Excellent fit

Thyme Planting Timeline — Carson, MS

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors March 15 Mar 15 – Mar 29
Harvest May 24 May 24 – Jul 26

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.3"/week · Natural rainfall sufficient

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–8 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

256 days in Jefferson Davis County

Growing Tips for Thyme in Carson

Direct sow Thyme outdoors after March 08 in Jefferson Davis County when soil has warmed and frost danger has passed.

With Jefferson Davis County's clay soil (31% clay), work in 3-4 inches of compost before planting Thyme. Avoid tilling when soil is wet to prevent compaction.

With 59" of annual rainfall in Jefferson Davis County, ensure good drainage for Thyme — excess moisture can promote root rot and fungal diseases.

General growing tips

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 →

When should I plant Thyme in Carson, MS?

In Carson, MS, plant Thyme after the last frost (around March 8) and before the first frost (around November 19). Best results when soil holds above 50°F.

What growing zone is Carson, MS for Thyme?

Carson sits in USDA Zone 8b. Thyme grows reliably in zones 4a through 9b, so it's a good fit here.

Can Thyme grow in Carson's climate?

Yes — Thyme grows well in Carson's temperate climate. Carson averages a 256-day frost-free season, with last frost around March 8 and first frost around November 19.

🌱

Your Jefferson Davis County Garden Planner — Free

A 22-page printable planner built for Jefferson Davis County (Zone 8b). 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 Jefferson Davis County, MS. Local conditions may vary. Last updated: August 2026.