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When to Plant Thyme in Orange County, FL

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.

Orange County, Florida is in USDA Zone 9b. The average last spring frost is February 3 and the first fall frost is December 21, giving you a growing season of approximately 321 days.

At an elevation of 494 feet, Orange County receives approximately 54.3 inches of rainfall annually with predominantly sand soil. Summer highs average 99ยฐF, so Thyme may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” 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.

Orange County, FL (Zone 9b) Year-round
321 days
Last Spring Frost February 3
321 growing days
First Fall Frost December 21

Orange County Soil Profile

Soil Type

Sand

Soil pH

5-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (192 days to spare)
Transplant: Jan 26 🍅 Harvest: Apr 6 – Jun 8
Recommended (50%) ✓ Fits season (181 days to spare)
Transplant: Feb 10 🍅 Harvest: Apr 21 – Jun 23
Safe Start (90%) ✓ Fits season (158 days to spare)
Transplant: Mar 10 🍅 Harvest: May 19 – Jul 21

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 Orange County

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

Soil pH

Your soil pH (5.0โ€“5.8) is more acidic than Thyme prefers (6.0โ€“8.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Orange 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 (1.6%). 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

5
successive plantings in your 321-day season

Sow every 8 weeks. Last sowing by Sep 22 to harvest before frost.

Plant Water Budget

Plant needs
0.3″/week
Rainfall provides
0.7″/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 โ€” 2.5" 0" โ„๏ธ Dormant
Feb 1.3" 3" 0" โœ… Rainfall sufficient
Mar 1.3" 2.9" 0" โœ… Rainfall sufficient
Apr 1.3" 2.6" 0" โœ… Rainfall sufficient
May 1.3" 4.1" 0" โœ… Rainfall sufficient
Jun 1.3" 7.1" 0" โœ… Rainfall sufficient
Jul 1.3" 7.7" 0" โœ… Rainfall sufficient
Aug 1.3" 8.7" 0" โœ… Rainfall sufficient
Sep 1.3" 6.5" 0" โœ… Rainfall sufficient
Oct 1.3" 4.8" 0" โœ… Rainfall sufficient
Nov 1.3" 2" 0" โœ… Rainfall sufficient
Dec 1.3" 2.3" 0" โœ… Rainfall sufficient

Water needs are for active growing months only (Febโ€“Dec in Orange County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 ~1,940 GDD — county provides 7,808 GDD Excellent fit

Thyme Planting Timeline โ€” Orange County, FL

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors February 10 Feb 10 โ€“ Feb 24
Harvest April 21 Apr 21 โ€“ Jun 23

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.3"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

70โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“8 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 9b

๐Ÿ“† Growing Season

321 days in Orange County

Growing Tips for Thyme in Orange County

Direct sow Thyme outdoors after February 03 in Orange County when soil has warmed and frost danger has passed.

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

With summer highs reaching 99ยฐF in Orange County, provide afternoon shade for Thyme and water deeply in the morning.

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 Orange County, FL?

Orange County is in Zone 9b with an average last frost of February 3. Plan your Thyme planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Orange County, FL?

Orange County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is February 3 and first fall frost is December 21.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Orange County gardeners in Zone 9b 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 Orange County, FL. Local conditions may vary. Last updated: April 2026.