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When to Plant Leeks in Robertson County, TX

Leeks are a mild, sweet allium that produces long white shanks. They are more refined than onions and are a key ingredient in soups, stews, and gratins.

Robertson County, Texas is in USDA Zone 8a. The average last spring frost is March 7 and the first fall frost is November 16, giving you a growing season of approximately 254 days.

At an elevation of 85 feet, Robertson County receives approximately 61.1 inches of rainfall annually with predominantly clay soil. Summer highs average 93Β°F, providing good warmth for Leeks during the growing season. Clay soil retains moisture well for Leeks, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Leeks root diseases.

Robertson County, TX (Zone 8a) Long season
254 days
Last Spring Frost March 7
254 growing days
First Fall Frost November 16

Robertson County Soil Profile

Soil Type

Clay

Soil pH

6.8-8

Drainage

Well Drained

Monthly Watering Guide for Leeks

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

Month Leeks Needs Rainfall You Supplement Action
Jan β€” 1.4" 0" ❄️ Dormant
Feb β€” 2.2" 0" ❄️ Dormant
Mar 4.3" 4.3" 0" βœ… Rainfall sufficient
Apr 4.3" 5.6" 0" βœ… Rainfall sufficient
May 4.3" 10" 0" βœ… Rainfall sufficient
Jun 4.3" 8.4" 0" βœ… Rainfall sufficient
Jul 4.3" 8.3" 0" βœ… Rainfall sufficient
Aug 4.3" 8.2" 0" βœ… Rainfall sufficient
Sep 4.3" 5.2" 0" βœ… Rainfall sufficient
Oct 4.3" 3.7" 0.6" πŸ’§ Light watering
Nov 4.3" 2.3" 2" πŸ’§ Light watering
Dec β€” 1.6" 0" ❄️ Dormant

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

Leeks Planting Timeline β€” Robertson County, TX

Leeks Planting Calendar

Activity When Date Range
Start Indoors January 31 Jan 31 – Feb 14
Transplant Outdoors March 7 Mar 7 – Mar 21
Direct Sow February 21 Feb 21 – Mar 14
Harvest June 6 Jun 6 – Aug 22
Fall Sowing September 7 Sep 7 – Sep 21

Plant 1" deep Β· 15" apart Β· Rows 24" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors Direct Sow
March Transplant Outdoors Direct Sow
April β€”
May β€”
June Harvest
July Harvest
August Harvest
September Fall Sowing
October β€”
November β€”
December β€”

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

90–150 days

πŸ§ͺ Soil pH

Needs 6–7 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 8a

πŸ“† Growing Season

254 days in Robertson County

Growing Tips for Robertson County

Start seeds indoors 10-12 weeks before last frost. Transplant into trenches and hill soil around stems as they grow to increase the white portion. Harvest as needed.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Leeks in Robertson County, TX?

Robertson County is in Zone 8a with an average last frost of March 7. Plan your Leeks planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Robertson County, TX?

Robertson County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 7 and first fall frost is November 16.

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Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Robertson County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.

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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 Robertson County, TX. Local conditions may vary. Last updated: April 2026.