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When to Plant Thyme in McKinley County, NM

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.

McKinley County, New Mexico is in USDA Zone 5b. The average last spring frost is May 29 and the first fall frost is September 24, giving you a growing season of approximately 118 days.

At an elevation of 7,104 feet, McKinley County receives approximately 10.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 86ยฐF, providing good warmth for Thyme during the growing season. 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. With low rainfall, drip irrigation is essential for growing Thyme successfully. Mulch heavily to conserve soil moisture.

McKinley County, NM (Zone 5b) Short season
118 days
Last Spring Frost May 29
118 growing days
First Fall Frost September 24

McKinley County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.3-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 31 🍅 Harvest: Aug 9 – Oct 11
Recommended (50%) ✗ May not fit
Transplant: Jun 5 🍅 Harvest: Aug 14 – Oct 16
Safe Start (90%) ✗ May not fit
Transplant: Jun 21 🍅 Harvest: Aug 30 – Nov 1

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 McKinley County

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

Soil pH

Your soil pH (7.3โ€“8.2) overlaps with Thyme's range (6.0โ€“8.0), though not a perfect match.

Soil Texture

Sandy soil in McKinley 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 (0.8%). Add 2-3 inches of compost before planting Thyme.

How to Plant Thyme

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

Plant Water Budget

Plant needs
0.3″/week
Rainfall provides
0.4″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 21 gal / 100 sq ft
Drought risk

Water stress score is 10/10 โ€” 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 โ€” 0.8" 0" โ„๏ธ Dormant
Feb โ€” 0.6" 0" โ„๏ธ Dormant
Mar โ€” 0.7" 0" โ„๏ธ Dormant
Apr โ€” 0.4" 0" โ„๏ธ Dormant
May 1.3" 0.3" 1" ๐Ÿšฟ Regular watering
Jun 1.3" 0.4" 0.9" ๐Ÿšฟ Regular watering
Jul 1.3" 1.8" 0" โœ… Rainfall sufficient
Aug 1.3" 2" 0" โœ… Rainfall sufficient
Sep 1.3" 1.3" 0" โœ… Rainfall sufficient
Oct โ€” 0.9" 0" โ„๏ธ Dormant
Nov โ€” 0.6" 0" โ„๏ธ Dormant
Dec โ€” 0.8" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Mayโ€“Sep in McKinley 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 ~1,160 GDD — county provides 1,711 GDD Excellent fit

Thyme Planting Timeline โ€” McKinley County, NM

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors June 5 Jun 5 โ€“ Jun 19
Harvest August 14 Aug 14 โ€“ Oct 16

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.3"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

70โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“8 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 5b

๐Ÿ“† Growing Season

118 days in McKinley County

Growing Tips for Thyme in McKinley County

Direct sow Thyme outdoors after May 29 in McKinley County when soil has warmed and frost danger has passed.

Sandy soil in McKinley 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.

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 McKinley County, NM?

McKinley County is in Zone 5b with an average last frost of May 29. Plan your Thyme planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is McKinley County, NM?

McKinley County, New Mexico is in USDA Hardiness Zone 5b. The average last spring frost is May 29 and first fall frost is September 24.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help McKinley County gardeners in Zone 5b 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 McKinley County, NM. Local conditions may vary. Last updated: April 2026.