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When to Plant Garlic in Shackelford County, TX

Shackelford County, Texas Zone 8a May

May to-do list for Shackelford County, Texas

May is a pivotal month for Shackelford County, Texas gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 30
Avg. first frost November 11
Soil temp (4") 57°F
Watering Low
Pest pressure Moderate
Daylight 13.7 hrs

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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.

Shackelford County, Texas is in USDA Zone 8a. The average last spring frost is March 30 and the first fall frost is November 11, giving you a growing season of approximately 226 days.

At an elevation of 4,145 feet, Shackelford County receives approximately 59.8 inches of rainfall annually with predominantly loam soil. Summer highs average 89°F, providing good warmth for Garlic during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Garlic root diseases.

Shackelford County, TX (Zone 8a) Long season
226 days
Last Spring Frost March 30
226 growing days
First Fall Frost November 11

Shackelford County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 19 🍅 Harvest: Jun 18 – Dec 3
Recommended (50%) ✗ May not fit
Transplant: Mar 30 🍅 Harvest: Jun 29 – Dec 14
Safe Start (90%) ✗ May not fit
Transplant: Apr 16 🍅 Harvest: Jul 16 – Dec 31

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 Shackelford County

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

Soil pH

Your soil pH (6.4–7.5) is within Garlic's preferred range (6.0–7.5).

Soil Texture

The loam soil in Shackelford County is excellent for Garlic — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is low (1.9%). 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

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 1.5" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 2.2" 3.4" 0" ✅ Rainfall sufficient
Apr 2.2" 6.8" 0" ✅ Rainfall sufficient
May 2.2" 8.6" 0" ✅ Rainfall sufficient
Jun 2.2" 9.4" 0" ✅ Rainfall sufficient
Jul 2.2" 8.9" 0" ✅ Rainfall sufficient
Aug 2.2" 6.6" 0" ✅ Rainfall sufficient
Sep 2.2" 5.1" 0" ✅ Rainfall sufficient
Oct 2.2" 3.7" 0" ✅ Rainfall sufficient
Nov 2.2" 2.1" 0.1" 💧 Light watering
Dec 1.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Shackelford 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 ~2,764 GDD — county provides 3,785 GDD Excellent fit

Garlic Planting Timeline — Shackelford County, TX

Garlic Planting Calendar

Activity When Date Range
Fall Sowing September 30 Sep 30 – Oct 14

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 Fall Sowing
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: ideal

🗺️ USDA Zone

Zone 8a

📆 Growing Season

226 days in Shackelford County

Growing Tips for Garlic in Shackelford County

Direct sow Garlic outdoors after March 30 in Shackelford County when soil has warmed and frost danger has passed.

Your 226.0-day growing season in Shackelford 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.

With 60" of annual rainfall in Shackelford County, ensure good drainage for Garlic — excess moisture can promote root rot and fungal diseases.

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 Shackelford County, TX?

Shackelford County is in Zone 8a with an average last frost of March 30. Plan your Garlic planting based on this frost date — see the calendar above for exact timing.

What planting zone is Shackelford County, TX?

Shackelford County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 30 and first fall frost is November 11.

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Your Shackelford County Garden Planner — Free

A 24-page printable planner built for Shackelford County (Zone 8a). 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 Shackelford 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.