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When to Plant Celtuce in Concho County, TX

Concho County, Texas Zone 8a May

Your May planting checklist for Concho County, Texas

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

Avg. last frost March 25
Avg. first frost November 12
Soil temp (4") 63°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Bring in the celtuce

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

Get ahead of June
  • First harvests: celtuce

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Celtuce (stem lettuce) is a Chinese vegetable grown for its thick, crunchy stem rather than its leaves. The peeled stem has a mild, cucumber-like flavor.

Concho County, Texas is in USDA Zone 8a. The average last spring frost is March 25 and the first fall frost is November 12, giving you a growing season of approximately 232 days.

At an elevation of 3,848 feet, Concho County receives approximately 58.2 inches of rainfall annually with predominantly loam soil. Summer highs average 93°F, providing good warmth for Celtuce during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celtuce root diseases.

Concho County, TX (Zone 8a) Long season
232 days
Last Spring Frost March 25
232 growing days
First Fall Frost November 12
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Concho County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (134 days to spare)
Start indoors: Feb 5 Transplant: Mar 12 🍅 Harvest: May 14 – Jun 25
Recommended (50%) ✓ Fits season (127 days to spare)
Start indoors: Feb 18 Transplant: Mar 25 🍅 Harvest: May 27 – Jul 8
Safe Start (90%) ✓ Fits season (127 days to spare)
Start indoors: Mar 9 Transplant: Apr 13 🍅 Harvest: Jun 15 – Jul 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 Concho County

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

Soil pH

Your soil pH (6.6–7.4) overlaps with Celtuce's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.0%). Annual compost additions will help Celtuce.

How to Plant Celtuce

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Succession Planting Celtuce

4
successive plantings in your 232-day season

Sow every 6.9 weeks. Last sowing by Aug 14 to harvest before frost.

For a dedicated fall crop, sow by Sep 03.

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Celtuce

Celtuce needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Celtuce Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 2.2" 0" ❄️ Dormant
Mar 3" 3.4" 0" ✅ Rainfall sufficient
Apr 3" 6.8" 0" ✅ Rainfall sufficient
May 3" 8.9" 0" ✅ Rainfall sufficient
Jun 3" 9.3" 0" ✅ Rainfall sufficient
Jul 3" 6.8" 0" ✅ Rainfall sufficient
Aug 3" 6.5" 0" ✅ Rainfall sufficient
Sep 3" 5.4" 0" ✅ Rainfall sufficient
Oct 3" 3.6" 0" ✅ Rainfall sufficient
Nov 3" 2.2" 0.8" 💧 Light watering
Dec 1.6" 0" ❄️ Dormant

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

Celtuce 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.

Celtuce needs ~1,481 GDD — county provides 4,582 GDD Excellent fit

Celtuce Planting Timeline — Concho County, TX

Celtuce Planting Calendar

Activity When Date Range
Start Indoors February 18 Feb 18 – Mar 4
Transplant Outdoors March 25 Mar 25 – Apr 8
Direct Sow March 11 Mar 11 – Apr 1
Harvest May 27 May 27 – Jul 8
Fall Sowing September 3 Sep 3 – Sep 17

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

232 days in Concho County

Growing Tips for Celtuce in Concho County

Direct sow Celtuce outdoors after March 25 in Concho County when soil has warmed and frost danger has passed.

Common pests for Celtuce in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow in spring or start indoors. Space 12 inches apart. Harvest when stems are about 1 inch in diameter. Peel the tough outer skin to reveal the tender center.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Celtuce in Concho County, TX?

Concho County is in Zone 8a with an average last frost of March 25. Plan your Celtuce planting based on this frost date — see the calendar above for exact timing.

What planting zone is Concho County, TX?

Concho County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 25 and first fall frost is November 12.

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Your Concho County Garden Planner — Free

A 24-page printable planner built for Concho 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 Concho 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.