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When to Plant Cauliflower in McCulloch County, TX

McCulloch County, Texas Zone 8b May

This month in McCulloch County, Texas

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

Avg. last frost March 17
Avg. first frost November 16
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Collect cauliflower at their peak

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

To set up a strong June, finish these tasks
  • First harvests: cauliflower

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Cauliflower is a cool-season brassica that produces dense white, purple, or green heads called curds. It is more finicky than broccoli but rewards with a mild, nutty flavor.

McCulloch County, Texas is in USDA Zone 8b. The average last spring frost is March 17 and the first fall frost is November 16, giving you a growing season of approximately 244 days.

At an elevation of 1,250 feet, McCulloch County receives approximately 60.1 inches of rainfall annually with predominantly loam soil. Summer highs average 96°F, so Cauliflower may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cauliflower root diseases.

McCulloch County, TX (Zone 8b) Long season
244 days
Last Spring Frost March 17
244 growing days
First Fall Frost November 16

McCulloch County Soil Profile

Soil Type

Loam

Soil pH

6.8-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (129 days to spare)
Start indoors: Feb 1 Transplant: Mar 8 🍅 Harvest: May 3 – Jul 5
Recommended (50%) ✓ Fits season (125 days to spare)
Start indoors: Feb 10 Transplant: Mar 17 🍅 Harvest: May 12 – Jul 14
Safe Start (90%) ✓ Fits season (122 days to spare)
Start indoors: Mar 4 Transplant: Apr 8 🍅 Harvest: Jun 3 – Aug 5

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 McCulloch County

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

Soil pH

Your soil pH (6.8–7.7) is more alkaline than Cauliflower prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

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

How to Plant Cauliflower

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

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

Succession Planting Cauliflower

5
successive plantings in your 244-day season

Sow every 6.3 weeks. Last sowing by Aug 08 to harvest before frost.

For a dedicated fall crop, sow by Sep 07.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/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 Cauliflower

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

Month Cauliflower Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 4.3" 3.5" 0.8" 💧 Light watering
Apr 4.3" 6.6" 0" ✅ Rainfall sufficient
May 4.3" 9.8" 0" ✅ Rainfall sufficient
Jun 4.3" 8.6" 0" ✅ Rainfall sufficient
Jul 4.3" 8" 0" ✅ Rainfall sufficient
Aug 4.3" 7" 0" ✅ Rainfall sufficient
Sep 4.3" 5.1" 0" ✅ Rainfall sufficient
Oct 4.3" 3.9" 0.4" 💧 Light watering
Nov 4.3" 2.2" 2.1" 💧 Light watering
Dec 1.7" 0" ❄️ Dormant

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

Cauliflower 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.

Cauliflower needs ~1,705 GDD — county provides 5,368 GDD Excellent fit

Cauliflower Planting Timeline — McCulloch County, TX

Cauliflower Planting Calendar

Activity When Date Range
Start Indoors February 10 Feb 10 – Feb 24
Transplant Outdoors March 17 Mar 17 – Mar 31
Direct Sow March 3 Mar 3 – Mar 24
Harvest May 12 May 12 – Jul 14
Fall Sowing September 7 Sep 7 – Sep 21

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

55–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

244 days in McCulloch County

Growing Tips for Cauliflower in McCulloch County

Direct sow Cauliflower outdoors after March 17 in McCulloch County when soil has warmed and frost danger has passed.

Summer highs in McCulloch County reach 96°F — grow Cauliflower as a spring or fall crop. Use shade cloth if planting in summer.

Common pests for Cauliflower in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6 weeks before transplanting. Blanch white varieties by tying outer leaves over the head. Provide consistent moisture and avoid temperature extremes.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cauliflower in McCulloch County, TX?

McCulloch County is in Zone 8b with an average last frost of March 17. Plan your Cauliflower planting based on this frost date — see the calendar above for exact timing.

What planting zone is McCulloch County, TX?

McCulloch County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 17 and first fall frost is November 16.

🌱

Your McCulloch County Garden Planner — Free

A 24-page printable planner built for McCulloch County (Zone 8b). 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 McCulloch 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.