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When to Plant Thyme in Madison County, FL

Madison County, Florida Zone 9a May

This month in Madison County, Florida

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 5
Avg. first frost November 25
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Pick thyme

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

To set up a strong June, finish these tasks
  • First harvests: thyme

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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.

Madison County, Florida is in USDA Zone 9a. The average last spring frost is March 5 and the first fall frost is November 25, giving you a growing season of approximately 265 days.

At an elevation of 434 feet, Madison County receives approximately 61.2 inches of rainfall annually with predominantly sand soil. Summer highs average 95°F, so Thyme may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Thyme will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Thyme root diseases.

Madison County, FL (Zone 9a) Long season
265 days
Last Spring Frost March 5
265 growing days
First Fall Frost November 25
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Madison County Soil Profile

Soil Type

Sand

Soil pH

5.2-5.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (124 days to spare)
Transplant: Mar 3 🍅 Harvest: May 12 – Jul 14
Recommended (50%) ✓ Fits season (125 days to spare)
Transplant: Mar 12 🍅 Harvest: May 21 – Jul 23
Safe Start (90%) ✓ Fits season (128 days to spare)
Transplant: Apr 1 🍅 Harvest: Jun 10 – Aug 12

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 Madison County

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

Soil pH

Your soil pH (5.2–5.7) is more acidic than Thyme prefers (6.0–8.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Madison County warms quickly in spring but drains fast. Thyme will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Thyme.

Organic Matter

Organic matter is low (1.4%). Add 2-3 inches of compost before planting Thyme.

How to Plant Thyme

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

Succession Planting Thyme

4
successive plantings in your 265-day season

Sow every 8 weeks. Last sowing by Aug 27 to harvest before frost.

Plant Water Budget

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

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 3.2" 0" ❄️ Dormant
Feb 3.6" 0" ❄️ Dormant
Mar 1.3" 3.8" 0" ✅ Rainfall sufficient
Apr 1.3" 3.1" 0" ✅ Rainfall sufficient
May 1.3" 4.1" 0" ✅ Rainfall sufficient
Jun 1.3" 7.7" 0" ✅ Rainfall sufficient
Jul 1.3" 8" 0" ✅ Rainfall sufficient
Aug 1.3" 9.6" 0" ✅ Rainfall sufficient
Sep 1.3" 8.6" 0" ✅ Rainfall sufficient
Oct 1.3" 4.6" 0" ✅ Rainfall sufficient
Nov 1.3" 2.4" 0" ✅ Rainfall sufficient
Dec 2.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Madison 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 ~1,700 GDD — county provides 5,631 GDD Excellent fit

Thyme Planting Timeline — Madison County, FL

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors March 12 Mar 12 – Mar 26
Harvest May 21 May 21 – Jul 23

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
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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: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

265 days in Madison County

Growing Tips for Thyme in Madison County

Direct sow Thyme outdoors after March 05 in Madison County when soil has warmed and frost danger has passed.

Sandy soil in Madison County dries quickly — mulch Thyme with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With 61" of annual rainfall in Madison 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 →

Frequently Asked Questions

When should I plant Thyme in Madison County, FL?

Madison County is in Zone 9a with an average last frost of March 5. Plan your Thyme planting based on this frost date — see the calendar above for exact timing.

What planting zone is Madison County, FL?

Madison County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 5 and first fall frost is November 25.

🌱

Your Madison County Garden Planner — Free

A 24-page printable planner built for Madison County (Zone 9a). 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 Madison County, FL. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.