Blog

When to Plant Garlic in Hartley County, TX

Hartley County, Texas Zone 7a May

Your May gardening checklist

Your garden in Hartley County, Texas is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost April 23
Avg. first frost October 17
Soil temp (4") 53°F
Watering Critical
Pest pressure Low
Daylight 13.9 hrs

Instant PDF download. No spam, unsubscribe any time.

Garlic is a pungent allium planted in fall and harvested the following summer. Hardneck varieties produce edible flower stalks (scapes) and are more cold-hardy.

Hartley County, Texas is in USDA Zone 7a. The average last spring frost is April 23 and the first fall frost is October 17, giving you a growing season of approximately 177 days.

At an elevation of 4,344 feet, Hartley County receives approximately 46.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Garlic may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Garlic will need more frequent watering and organic matter to retain nutrients.

Hartley County, TX (Zone 7a) Moderate season
177 days
Last Spring Frost April 23
177 growing days
First Fall Frost October 17

Hartley County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.2-8.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Apr 16 🍅 Harvest: Jul 16 – Nov 26
Recommended (50%) ✗ May not fit
Transplant: Apr 23 🍅 Harvest: Jul 23 – Dec 3
Safe Start (90%) ✗ May not fit
Transplant: May 5 🍅 Harvest: Aug 4 – Dec 15

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 Hartley County

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

Soil pH

Your soil pH (7.2–8.1) is more alkaline than Garlic prefers (6.0–7.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Garlic.

Organic Matter

Organic matter is low (1.1%). Add 2-3 inches of compost before planting Garlic.

How to Plant Garlic

1"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 6 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Garlic

Garlic needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Garlic Needs Rainfall You Supplement Action
Jan 2.7" 0" ❄️ Dormant
Feb 2.9" 0" ❄️ Dormant
Mar 2.8" 0" ❄️ Dormant
Apr 2.2" 1.3" 0.9" 💧 Light watering
May 2.2" 1.1" 1.1" 🚿 Regular watering
Jun 2.2" 1.4" 0.8" 💧 Light watering
Jul 2.2" 8.5" 0" ✅ Rainfall sufficient
Aug 2.2" 9.9" 0" ✅ Rainfall sufficient
Sep 2.2" 6" 0" ✅ Rainfall sufficient
Oct 2.2" 4.5" 0" ✅ Rainfall sufficient
Nov 2.3" 0" ❄️ Dormant
Dec 3" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Hartley County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Garlic 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.

Garlic needs ~3,630 GDD — county provides 3,894 GDD Good fit

Garlic Planting Timeline — Hartley County, TX

Garlic Planting Calendar

Activity When Date Range
Fall Sowing September 5 Sep 5 – Sep 19

Plant 1" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May
June
July
August
September Fall Sowing
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

90–240 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

177 days in Hartley County

Growing Tips for Garlic in Hartley County

Direct sow Garlic outdoors after April 23 in Hartley County when soil has warmed and frost danger has passed.

Sandy soil in Hartley County dries quickly — mulch Garlic with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 96°F in Hartley County, provide afternoon shade for Garlic and water deeply in the morning.

Your 177.0-day growing season in Hartley County is tight for Garlic (90.0-240.0 days to maturity). Start indoors and choose early-maturing varieties.

Common pests for Garlic in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.

General growing tips

Plant individual cloves pointed end up in fall, 6 weeks before ground freezes. Mulch heavily with straw. Harvest when lower leaves begin to brown but 5-6 green leaves remain.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans
  • Asparagus

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Garlic in Hartley County, TX?

Hartley County is in Zone 7a with an average last frost of April 23. Plan your Garlic planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hartley County, TX?

Hartley County, Texas is in USDA Hardiness Zone 7a. The average last spring frost is April 23 and first fall frost is October 17.

🌱

Your Hartley County Garden Planner — Free

A 24-page printable planner built for Hartley County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Hartley 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.