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When to Plant Thyme in Atascosa 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.

Atascosa County, Texas is in USDA Zone 8b. The average last spring frost is February 26 and the first fall frost is November 29, giving you a growing season of approximately 276 days.

At an elevation of 1,942 feet, Atascosa County receives approximately 51.7 inches of rainfall annually with predominantly loam soil. Summer highs average 91ยฐF, providing good warmth for Thyme during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Thyme root diseases.

Atascosa County, TX (Zone 8b) Year-round
276 days
Last Spring Frost February 26
276 growing days
First Fall Frost November 29

Atascosa County Soil Profile

Soil Type

Loam

Soil pH

6.8-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (144 days to spare)
Transplant: Feb 20 🍅 Harvest: May 1 – Jul 3
Recommended (50%) ✓ Fits season (136 days to spare)
Transplant: Mar 5 🍅 Harvest: May 14 – Jul 16
Safe Start (90%) ✓ Fits season (129 days to spare)
Transplant: Mar 29 🍅 Harvest: Jun 7 – Aug 9

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 Atascosa County

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

Soil pH

Your soil pH (6.8โ€“7.7) is within Thyme's preferred range (6.0โ€“8.0).

Soil Texture

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

Drainage

Drainage is adequate for Thyme.

Organic Matter

Organic matter is moderate (2.1%). 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 276-day season

Sow every 8 weeks. Last sowing by Aug 31 to harvest before frost.

Plant Water Budget

Plant needs
0.3″/week
Rainfall provides
0.8″/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€” 1.5" 0" โ„๏ธ Dormant
Feb 1.3" 1.6" 0" โœ… Rainfall sufficient
Mar 1.3" 3.5" 0" โœ… Rainfall sufficient
Apr 1.3" 4.8" 0" โœ… Rainfall sufficient
May 1.3" 7.6" 0" โœ… Rainfall sufficient
Jun 1.3" 7.4" 0" โœ… Rainfall sufficient
Jul 1.3" 7.4" 0" โœ… Rainfall sufficient
Aug 1.3" 6.6" 0" โœ… Rainfall sufficient
Sep 1.3" 4.9" 0" โœ… Rainfall sufficient
Oct 1.3" 3.1" 0" โœ… Rainfall sufficient
Nov 1.3" 2" 0" โœ… Rainfall sufficient
Dec โ€” 1.4" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Febโ€“Nov in Atascosa 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 ~1,460 GDD — county provides 5,055 GDD Excellent fit

Thyme Planting Timeline โ€” Atascosa County, TX

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors March 5 Mar 5 โ€“ Mar 19
Harvest May 14 May 14 โ€“ Jul 16

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

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 8b

๐Ÿ“† Growing Season

276 days in Atascosa County

Growing Tips for Thyme in Atascosa County

Direct sow Thyme outdoors after February 26 in Atascosa County when soil has warmed and frost danger has passed.

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 Atascosa County, TX?

Atascosa County is in Zone 8b with an average last frost of February 26. Plan your Thyme planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Atascosa County, TX?

Atascosa County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 26 and first fall frost is November 29.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Atascosa County gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.

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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 Atascosa County, TX. Local conditions may vary. Last updated: April 2026.