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When to Plant Celtuce in Houston County, AL

Houston County, Alabama Zone 9a May

May in Houston County, Alabama — your action list

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Houston County, Alabama.

Avg. last frost March 6
Avg. first frost November 19
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. It's harvest week for celtuce

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

A few tasks this May that'll pay off in 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.

Houston County, Alabama is in USDA Zone 9a. The average last spring frost is March 6 and the first fall frost is November 19, giving you a growing season of approximately 258 days.

At an elevation of 230 feet, Houston County receives approximately 58.1 inches of rainfall annually with predominantly clay loam soil. Summer highs average 97°F, so Celtuce may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Celtuce, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celtuce root diseases.

Houston County, AL (Zone 9a) Long season
258 days
Last Spring Frost March 6
258 growing days
First Fall Frost November 19
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Houston County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (152 days to spare)
Start indoors: Jan 31 Transplant: Feb 28 🍅 Harvest: May 2 – Jun 13
Recommended (50%) ✓ Fits season (153 days to spare)
Start indoors: Feb 6 Transplant: Mar 6 🍅 Harvest: May 8 – Jun 19
Safe Start (90%) ✓ Fits season (158 days to spare)
Start indoors: Feb 27 Transplant: Mar 27 🍅 Harvest: May 29 – Jul 10

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 Houston County

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

Soil pH

Your soil pH (5.3–6.3) is more acidic than Celtuce prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Celtuce.

How to Plant Celtuce

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Celtuce

5
successive plantings in your 258-day season

Sow every 6.9 weeks. Last sowing by Aug 21 to harvest before frost.

For a dedicated fall crop, sow by Sep 24.

Plant Water Budget

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

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 4.3" 0" ❄️ Dormant
Feb 4.7" 0" ❄️ Dormant
Mar 3" 6.1" 0" ✅ Rainfall sufficient
Apr 3" 3.8" 0" ✅ Rainfall sufficient
May 3" 4.2" 0" ✅ Rainfall sufficient
Jun 3" 5.3" 0" ✅ Rainfall sufficient
Jul 3" 6.5" 0" ✅ Rainfall sufficient
Aug 3" 6" 0" ✅ Rainfall sufficient
Sep 3" 4.7" 0" ✅ Rainfall sufficient
Oct 3" 4.1" 0" ✅ Rainfall sufficient
Nov 3" 4.3" 0" ✅ Rainfall sufficient
Dec 4.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Houston 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 ~1,706 GDD — county provides 5,869 GDD Excellent fit

Celtuce Planting Timeline — Houston County, AL

Celtuce Planting Calendar

Activity When Date Range
Start Indoors February 6 Feb 6 – Feb 20
Transplant Outdoors March 6 Mar 6 – Mar 20
Direct Sow February 13 Feb 13 – Mar 6
Harvest May 8 May 8 – Jun 19
Fall Sowing September 24 Sep 24 – Oct 8

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 9a

📆 Growing Season

258 days in Houston County

Growing Tips for Celtuce in Houston County

Direct sow Celtuce outdoors after March 06 in Houston County when soil has warmed and frost danger has passed.

With Houston County's clay soil (31% clay), work in 3-4 inches of compost before planting Celtuce. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 97°F in Houston County, provide afternoon shade for Celtuce and water deeply in the morning.

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 Houston County, AL?

Houston County is in Zone 9a with an average last frost of March 6. Plan your Celtuce planting based on this frost date — see the calendar above for exact timing.

What planting zone is Houston County, AL?

Houston County, Alabama is in USDA Hardiness Zone 9a. The average last spring frost is March 6 and first fall frost is November 19.

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Your Houston County Garden Planner — Free

A 24-page printable planner built for Houston County (Zone 9a). 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 Houston County, AL. 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.