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When to Plant Thyme in Forrest County, MS

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.

Forrest County, Mississippi is in USDA Zone 8b. The average last spring frost is March 6 and the first fall frost is November 21, giving you a growing season of approximately 260 days.

At an elevation of 125 feet, Forrest County receives approximately 48.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90ยฐF, 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.

Forrest County, MS (Zone 8b) Long season
260 days
Last Spring Frost March 6
260 growing days
First Fall Frost November 21

Forrest County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (119 days to spare)
Transplant: Mar 7 🍅 Harvest: May 16 – Jul 18
Recommended (50%) ✓ Fits season (120 days to spare)
Transplant: Mar 13 🍅 Harvest: May 22 – Jul 24
Safe Start (90%) ✓ Fits season (116 days to spare)
Transplant: Apr 2 🍅 Harvest: Jun 11 – Aug 13

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
0.5″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Thyme needs ~1,400 GDD — county provides 4,550 GDD Excellent fit

Thyme Planting Timeline โ€” Forrest County, MS

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors March 13 Mar 13 โ€“ Mar 27
Harvest May 22 May 22 โ€“ Jul 24

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

70โ€“90 days

Soil pH

6 โ€“ 8

USDA Zone

Zone 8b

Growing Season

260 days

Growing Tips for Forrest 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Thyme in Forrest County, MS?

Forrest County is in Zone 8b with an average last frost of March 6. Plan your Thyme planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Forrest County, MS?

Forrest County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 6 and first fall frost is November 21.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Forrest County gardeners in Zone 8b 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 Forrest County, MS. Local conditions may vary. Last updated: April 2026.