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When to Plant Cauliflower in Milam County, TX

Milam County, Texas Zone 9a May

Your May game plan for Milam County, Texas

A quick May briefing for Milam County, Texas gardeners — what's urgent, what's next, and what can wait.

Avg. last frost March 4
Avg. first frost November 21
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Start harvesting cauliflower

    If you can't use it all right away, check the food-preservation section of your planner.

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.

Milam County, Texas is in USDA Zone 9a. The average last spring frost is March 4 and the first fall frost is November 21, giving you a growing season of approximately 262 days.

At an elevation of 61 feet, Milam County receives approximately 65.3 inches of rainfall annually with predominantly clay soil. Summer highs average 92°F, providing good warmth for Cauliflower during the growing season. Clay soil retains moisture well for Cauliflower, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cauliflower root diseases.

Milam County, TX (Zone 9a) Long season
262 days
Last Spring Frost March 4
262 growing days
First Fall Frost November 21

Milam County Soil Profile

Soil Type

Clay

Soil pH

6.8-8.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (150 days to spare)
Start indoors: Jan 20 Transplant: Feb 17 🍅 Harvest: Apr 14 – Jun 16
Recommended (50%) ✓ Fits season (143 days to spare)
Start indoors: Feb 4 Transplant: Mar 4 🍅 Harvest: Apr 29 – Jul 1
Safe Start (90%) ✓ Fits season (145 days to spare)
Start indoors: Feb 24 Transplant: Mar 24 🍅 Harvest: May 19 – Jul 21

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 Milam County

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

Soil pH

Your soil pH (6.8–8.3) is more alkaline than Cauliflower prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Heavy clay soil (46% clay) in Milam County compacts easily and drains slowly. Amend with compost and avoid working soil when wet.

Organic Matter

Organic matter is moderate (3.4%). Annual compost additions will help Cauliflower.

How to Plant Cauliflower

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

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

Succession Planting Cauliflower

5
successive plantings in your 262-day season

Sow every 6.3 weeks. Last sowing by Aug 13 to harvest before frost.

For a dedicated fall crop, sow by Sep 26.

Plant Water Budget

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

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 1.6" 0" ❄️ Dormant
Feb 2.5" 0" ❄️ Dormant
Mar 4.3" 4" 0.3" 💧 Light watering
Apr 4.3" 7" 0" ✅ Rainfall sufficient
May 4.3" 9.4" 0" ✅ Rainfall sufficient
Jun 4.3" 10.2" 0" ✅ Rainfall sufficient
Jul 4.3" 7.9" 0" ✅ Rainfall sufficient
Aug 4.3" 8.8" 0" ✅ Rainfall sufficient
Sep 4.3" 6.1" 0" ✅ Rainfall sufficient
Oct 4.3" 3.9" 0.4" 💧 Light watering
Nov 4.3" 2.3" 2" 💧 Light watering
Dec 1.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Milam 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 ~1,472 GDD — county provides 4,978 GDD Excellent fit

Cauliflower Planting Timeline — Milam County, TX

Cauliflower Planting Calendar

Activity When Date Range
Start Indoors February 4 Feb 4 – Feb 18
Transplant Outdoors March 4 Mar 4 – Mar 18
Direct Sow February 11 Feb 11 – Mar 4
Harvest April 29 Apr 29 – Jul 1
Fall Sowing September 26 Sep 26 – Oct 10

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors Direct Sow
March Transplant Outdoors Direct Sow
April Harvest
May Harvest
June Harvest
July Harvest
August
September Fall Sowing
October Fall Sowing
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 9a

📆 Growing Season

262 days in Milam County

Growing Tips for Cauliflower in Milam County

Direct sow Cauliflower outdoors after March 04 in Milam County when soil has warmed and frost danger has passed.

With Milam County's clay soil (46% clay), work in 3-4 inches of compost before planting Cauliflower. Avoid tilling when soil is wet to prevent compaction.

Summer highs in Milam County reach 92°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 Milam County, TX?

Milam County is in Zone 9a with an average last frost of March 4. Plan your Cauliflower planting based on this frost date — see the calendar above for exact timing.

What planting zone is Milam County, TX?

Milam County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is March 4 and first fall frost is November 21.

🌱

Your Milam County Garden Planner — Free

A 24-page printable planner built for Milam 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 Milam 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.