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When to Plant Thyme in Donley County, TX

Donley County, Texas Zone 7b May

This month in Donley County, Texas

Welcome to May in Zone 7b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost April 7
Avg. first frost October 31
Soil temp (4") 57°F
Watering High
Pest pressure Moderate
Daylight 13.8 hrs
A few tasks this May that'll pay off in June
  • 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.

Donley County, Texas is in USDA Zone 7b. The average last spring frost is April 7 and the first fall frost is October 31, giving you a growing season of approximately 207 days.

At an elevation of 4,196 feet, Donley County receives approximately 57 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100°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.

Donley County, TX (Zone 7b) Long season
207 days
Last Spring Frost April 7
207 growing days
First Fall Frost October 31
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Donley County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.8-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (70 days to spare)
Transplant: Apr 5 🍅 Harvest: Jun 14 – Aug 16
Recommended (50%) ✓ Fits season (67 days to spare)
Transplant: Apr 14 🍅 Harvest: Jun 23 – Aug 25
Safe Start (90%) ✓ Fits season (70 days to spare)
Transplant: Apr 27 🍅 Harvest: Jul 6 – Sep 7

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 Donley County

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

Soil pH

Your soil pH (7.8–8.2) overlaps with Thyme's range (6.0–8.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is low (1.0%). 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

3
successive plantings in your 207-day season

Sow every 8 weeks. Last sowing by Aug 02 to harvest before frost.

Plant Water Budget

Plant needs
0.3″/week
Rainfall provides
1.2″/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 4.3" 0" ❄️ Dormant
Feb 2.9" 0" ❄️ Dormant
Mar 3.2" 0" ❄️ Dormant
Apr 1.3" 1.9" 0" ✅ Rainfall sufficient
May 1.3" 1.3" 0" ✅ Rainfall sufficient
Jun 1.3" 2.1" 0" ✅ Rainfall sufficient
Jul 1.3" 10.9" 0" ✅ Rainfall sufficient
Aug 1.3" 11.1" 0" ✅ Rainfall sufficient
Sep 1.3" 8.3" 0" ✅ Rainfall sufficient
Oct 1.3" 4.5" 0" ✅ Rainfall sufficient
Nov 3.1" 0" ❄️ Dormant
Dec 3.3" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Donley 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 ~2,000 GDD — county provides 5,175 GDD Excellent fit

Thyme Planting Timeline — Donley County, TX

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors April 14 Apr 14 – Apr 28
Harvest June 23 Jun 23 – Aug 25

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

Month-by-Month Timeline

MonthActivities
January
February
March
April Transplant Outdoors
May
June Harvest
July Harvest
August Harvest
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: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

207 days in Donley County

Growing Tips for Thyme in Donley County

Direct sow Thyme outdoors after April 07 in Donley County when soil has warmed and frost danger has passed.

Sandy soil in Donley 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 summer highs reaching 100°F in Donley County, provide afternoon shade for Thyme and water deeply in the morning.

With 57" of annual rainfall in Donley 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 Donley County, TX?

Donley County is in Zone 7b with an average last frost of April 7. Plan your Thyme planting based on this frost date — see the calendar above for exact timing.

What planting zone is Donley County, TX?

Donley County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is April 7 and first fall frost is October 31.

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Your Donley County Garden Planner — Free

A 24-page printable planner built for Donley County (Zone 7b). 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 Donley County, TX. 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.