Blog

When to Plant Leeks in Clay County, TX

Clay County, Texas Zone 8a May

May to-do list for Clay County, Texas

Each item below is timed to Clay County, Texas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost March 21
Avg. first frost November 11
Soil temp (4") 60°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
June prep starts now
  • First harvests: leeks

Instant PDF download. No spam, unsubscribe any time.

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.

Clay County, Texas is in USDA Zone 8a. The average last spring frost is March 21 and the first fall frost is November 11, giving you a growing season of approximately 235 days.

At an elevation of 3,266 feet, Clay County receives approximately 64.3 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Leeks during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Leeks root diseases.

Clay County, TX (Zone 8a) Long season
235 days
Last Spring Frost March 21
235 growing days
First Fall Frost November 11

Clay County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (66 days to spare)
Start indoors: Feb 7 Transplant: Mar 14 🍅 Harvest: Jun 13 – Aug 29
Recommended (50%) ✓ Fits season (67 days to spare)
Start indoors: Feb 14 Transplant: Mar 21 🍅 Harvest: Jun 20 – Sep 5
Safe Start (90%) ✓ Fits season (57 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Jul 15 – Sep 30

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 Clay County

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

Soil pH

Your soil pH (6.5–7.2) overlaps with Leeks's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Leeks.

How to Plant Leeks

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
1.2″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Leeks

Leeks needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Leeks Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 2.4" 0" ❄️ Dormant
Mar 3.5" 4.5" 0" ✅ Rainfall sufficient
Apr 3.5" 7.5" 0" ✅ Rainfall sufficient
May 3.5" 9.1" 0" ✅ Rainfall sufficient
Jun 3.5" 10" 0" ✅ Rainfall sufficient
Jul 3.5" 8.5" 0" ✅ Rainfall sufficient
Aug 3.5" 7.4" 0" ✅ Rainfall sufficient
Sep 3.5" 5.7" 0" ✅ Rainfall sufficient
Oct 3.5" 3.6" 0" ✅ Rainfall sufficient
Nov 3.5" 2.5" 1" 💧 Light watering
Dec 1.4" 0" ❄️ Dormant

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

Leeks 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.

Leeks needs ~2,190 GDD — county provides 4,288 GDD Excellent fit

Leeks Planting Timeline — Clay County, TX

Leeks Planting Calendar

Activity When Date Range
Start Indoors February 14 Feb 14 – Feb 28
Transplant Outdoors March 21 Mar 21 – Apr 4
Direct Sow March 7 Mar 7 – Mar 28
Harvest June 20 Jun 20 – Sep 5
Fall Sowing September 2 Sep 2 – Sep 16

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

90–150 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

235 days in Clay County

Growing Tips for Leeks in Clay County

Direct sow Leeks outdoors after March 21 in Clay County when soil has warmed and frost danger has passed.

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

General growing tips

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 Clay County, TX?

Clay County is in Zone 8a with an average last frost of March 21. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.

What planting zone is Clay County, TX?

Clay County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 21 and first fall frost is November 11.

🌱

Your Clay County Garden Planner — Free

A 24-page printable planner built for Clay 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.

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 Clay 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.