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When to Plant Garlic in Comanche County, TX

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.

Comanche County, Texas is in USDA Zone 8a. The average last spring frost is March 19 and the first fall frost is November 14, giving you a growing season of approximately 240 days.

At an elevation of 2,216 feet, Comanche County receives approximately 59.6 inches of rainfall annually with predominantly loam soil. Summer highs average 91ยฐF, providing good warmth for Garlic during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Garlic root diseases.

Comanche County, TX (Zone 8a) Long season
240 days
Last Spring Frost March 19
240 growing days
First Fall Frost November 14

Comanche County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 8 🍅 Harvest: Jun 7 – Nov 22
Recommended (50%) ✗ May not fit
Transplant: Mar 19 🍅 Harvest: Jun 18 – Dec 3
Safe Start (90%) ✗ May not fit
Transplant: Apr 12 🍅 Harvest: Jul 12 – Dec 27

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 Comanche County

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

Soil pH

Your soil pH (6.6โ€“7.5) is within Garlic's preferred range (6.0โ€“7.5).

Soil Texture

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

Drainage

Drainage is adequate for Garlic.

Organic Matter

Organic matter is moderate (2.3%). Annual compost additions will help 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
1.0″/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 โ€” 1.6" 0" โ„๏ธ Dormant
Feb โ€” 2.1" 0" โ„๏ธ Dormant
Mar 2.2" 3.4" 0" โœ… Rainfall sufficient
Apr 2.2" 5.9" 0" โœ… Rainfall sufficient
May 2.2" 9.3" 0" โœ… Rainfall sufficient
Jun 2.2" 8.7" 0" โœ… Rainfall sufficient
Jul 2.2" 8.8" 0" โœ… Rainfall sufficient
Aug 2.2" 6.6" 0" โœ… Rainfall sufficient
Sep 2.2" 5.5" 0" โœ… Rainfall sufficient
Oct 2.2" 4.1" 0" โœ… Rainfall sufficient
Nov 2.2" 1.9" 0.3" ๐Ÿ’ง Light watering
Dec โ€” 1.6" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Comanche County). Supplement amounts are based on average rainfall โ€” 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" 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.

Garlic needs ~3,011 GDD — county provides 4,380 GDD Excellent fit

Garlic Planting Timeline โ€” Comanche County, TX

Garlic Planting Calendar

Activity When Date Range
Fall Sowing October 3 Oct 3 โ€“ Oct 17

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.5"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

90โ€“240 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: ideal

๐Ÿ—บ๏ธ USDA Zone

Zone 8a

๐Ÿ“† Growing Season

240 days in Comanche County

Growing Tips for Garlic in Comanche County

Direct sow Garlic outdoors after March 19 in Comanche County when soil has warmed and frost danger has passed.

Your 240.0-day growing season in Comanche 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 Comanche County, ensure good drainage for Garlic โ€” 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 Comanche County, TX?

Comanche County is in Zone 8a with an average last frost of March 19. Plan your Garlic planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Comanche County, TX?

Comanche County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 19 and first fall frost is November 14.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Comanche County gardeners in Zone 8a 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 Comanche County, TX. Local conditions may vary. Last updated: April 2026.