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When to Plant Thyme in Aransas County, TX

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.

Aransas County, Texas is in USDA Zone 9a. The average last spring frost is February 10 and the first fall frost is December 12, giving you a growing season of approximately 305 days.

At an elevation of 173 feet, Aransas County receives approximately 67.4 inches of rainfall annually with predominantly loam soil. Summer highs average 104ยฐF, so Thyme may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Thyme root diseases.

Aransas County, TX (Zone 9a) Year-round
305 days
Last Spring Frost February 10
305 growing days
First Fall Frost December 12

Aransas County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (180 days to spare)
Transplant: Jan 25 🍅 Harvest: Apr 5 – Jun 7
Recommended (50%) ✓ Fits season (165 days to spare)
Transplant: Feb 17 🍅 Harvest: Apr 28 – Jun 30
Safe Start (90%) ✓ Fits season (145 days to spare)
Transplant: Mar 18 🍅 Harvest: May 27 – Jul 29

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 Aransas County

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

Soil pH

Your soil pH (6.7โ€“7.7) is within Thyme's preferred range (6.0โ€“8.0).

Soil Texture

The loam soil in Aransas County is excellent for Thyme โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Thyme.

How to Plant Thyme

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

Succession Planting Thyme

5
successive plantings in your 305-day season

Sow every 8 weeks. Last sowing by Sep 13 to harvest before frost.

Plant Water Budget

Plant needs
0.3″/week
Rainfall provides
0.9″/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€” 1.9" 0" โ„๏ธ Dormant
Feb 1.3" 2.4" 0" โœ… Rainfall sufficient
Mar 1.3" 4.3" 0" โœ… Rainfall sufficient
Apr 1.3" 6.7" 0" โœ… Rainfall sufficient
May 1.3" 10.1" 0" โœ… Rainfall sufficient
Jun 1.3" 12" 0" โœ… Rainfall sufficient
Jul 1.3" 8.2" 0" โœ… Rainfall sufficient
Aug 1.3" 8.7" 0" โœ… Rainfall sufficient
Sep 1.3" 5.4" 0" โœ… Rainfall sufficient
Oct 1.3" 3.9" 0" โœ… Rainfall sufficient
Nov 1.3" 2.2" 0" โœ… Rainfall sufficient
Dec 1.3" 1.7" 0" โœ… Rainfall sufficient

Water needs are for active growing months only (Febโ€“Dec in Aransas 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 ~2,240 GDD — county provides 8,568 GDD Excellent fit

Thyme Planting Timeline โ€” Aransas County, TX

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors February 17 Feb 17 โ€“ Mar 3
Harvest April 28 Apr 28 โ€“ Jun 30

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Transplant Outdoors
March Transplant Outdoors
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: ideal

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

305 days in Aransas County

Growing Tips for Thyme in Aransas County

Direct sow Thyme outdoors after February 10 in Aransas County when soil has warmed and frost danger has passed.

With summer highs reaching 104ยฐF in Aransas County, provide afternoon shade for Thyme and water deeply in the morning.

With 67" of annual rainfall in Aransas County, ensure good drainage for Thyme โ€” 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 Aransas County, TX?

Aransas County is in Zone 9a with an average last frost of February 10. Plan your Thyme planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Aransas County, TX?

Aransas County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 10 and first fall frost is December 12.

๐ŸŒฑ

Plan Your Garden with Confidence

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