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When to Plant Garlic in Denton 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.

Denton County, Texas is in USDA Zone 8a. The average last spring frost is March 10 and the first fall frost is November 20, giving you a growing season of approximately 255 days.

At an elevation of 1,848 feet, Denton County receives approximately 64.5 inches of rainfall annually with predominantly clay soil. Summer highs average 90Β°F, providing good warmth for Garlic during the growing season. Clay soil retains moisture well for Garlic, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Garlic root diseases.

Denton County, TX (Zone 8a) Long season
255 days
Last Spring Frost March 10
255 growing days
First Fall Frost November 20

Denton County Soil Profile

Soil Type

Clay

Soil pH

6.7-8.1

Drainage

Well Drained

Monthly Watering Guide for Garlic

Garlic needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Garlic Needs Rainfall You Supplement Action
Jan β€” 1.4" 0" ❄️ Dormant
Feb β€” 2.1" 0" ❄️ Dormant
Mar 4.3" 4.2" 0.1" πŸ’§ Light watering
Apr 4.3" 7.5" 0" βœ… Rainfall sufficient
May 4.3" 9.6" 0" βœ… Rainfall sufficient
Jun 4.3" 10.2" 0" βœ… Rainfall sufficient
Jul 4.3" 7.6" 0" βœ… Rainfall sufficient
Aug 4.3" 8" 0" βœ… Rainfall sufficient
Sep 4.3" 6.4" 0" βœ… Rainfall sufficient
Oct 4.3" 3.5" 0.8" πŸ’§ Light watering
Nov 4.3" 2.4" 1.9" πŸ’§ Light watering
Dec β€” 1.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Denton County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Garlic Planting Timeline β€” Denton County, TX

Garlic Planting Calendar

Activity When Date Range
Fall Sowing October 9 Oct 9 – Oct 23

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

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

90–240 days

πŸ§ͺ Soil pH

Needs 6–7.5 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 8a

πŸ“† Growing Season

255 days in Denton County

Growing Tips for Denton County

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 Denton County, TX?

Denton County is in Zone 8a with an average last frost of March 10. Plan your Garlic planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Denton County, TX?

Denton County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 10 and first fall frost is November 20.

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Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Denton 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 Denton County, TX. Local conditions may vary. Last updated: April 2026.