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When to Plant Broccoli in Gonzales County, TX

Gonzales County, Texas Zone 9a May

May to-do list for Gonzales County, Texas

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

Avg. last frost February 28
Avg. first frost November 28
Soil temp (4") 62°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Harvest broccoli as they ripen

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

June prep starts now
  • First harvests: broccoli

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Broccoli is a nutrient-dense cool-season crop that produces large central heads followed by smaller side shoots. It is one of the most popular garden vegetables.

Gonzales County, Texas is in USDA Zone 9a. The average last spring frost is February 28 and the first fall frost is November 28, giving you a growing season of approximately 273 days.

At an elevation of 4,385 feet, Gonzales County receives approximately 67 inches of rainfall annually with predominantly loam soil. Summer highs average 97°F, so Broccoli may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Broccoli root diseases.

Gonzales County, TX (Zone 9a) Year-round
273 days
Last Spring Frost February 28
273 growing days
First Fall Frost November 28
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Gonzales County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (170 days to spare)
Start indoors: Jan 18 Transplant: Feb 15 🍅 Harvest: Apr 19 – May 31
Recommended (50%) ✓ Fits season (168 days to spare)
Start indoors: Jan 31 Transplant: Feb 28 🍅 Harvest: May 2 – Jun 13
Safe Start (90%) ✓ Fits season (159 days to spare)
Start indoors: Feb 23 Transplant: Mar 23 🍅 Harvest: May 25 – Jul 6

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 Gonzales County

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

Soil pH

Your soil pH (6.2–7.4) overlaps with Broccoli's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Broccoli

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 Broccoli

5
successive plantings in your 273-day season

Sow every 6.9 weeks. Last sowing by Aug 30 to harvest before frost.

For a dedicated fall crop, sow by Oct 03.

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 Broccoli

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

Month Broccoli Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 4.3" 2" 2.3" 🚿 Regular watering
Mar 4.3" 4.3" 0" ✅ Rainfall sufficient
Apr 4.3" 7.7" 0" ✅ Rainfall sufficient
May 4.3" 10.3" 0" ✅ Rainfall sufficient
Jun 4.3" 9.8" 0" ✅ Rainfall sufficient
Jul 4.3" 9" 0" ✅ Rainfall sufficient
Aug 4.3" 8.8" 0" ✅ Rainfall sufficient
Sep 4.3" 5.3" 0" ✅ Rainfall sufficient
Oct 4.3" 4.3" 0" ✅ Rainfall sufficient
Nov 4.3" 2.5" 1.8" 💧 Light watering
Dec 1.6" 0" ❄️ Dormant

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

Broccoli 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.

Broccoli needs ~1,706 GDD — county provides 6,233 GDD Excellent fit

Broccoli Planting Timeline — Gonzales County, TX

Broccoli Planting Calendar

Activity When Date Range
Start Indoors January 31 Jan 31 – Feb 14
Transplant Outdoors February 28 Feb 28 – Mar 14
Direct Sow February 7 Feb 7 – Feb 28
Harvest May 2 May 2 – Jun 13
Fall Sowing October 3 Oct 3 – Oct 17

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

273 days in Gonzales County

Growing Tips for Broccoli in Gonzales County

Direct sow Broccoli outdoors after February 28 in Gonzales County when soil has warmed and frost danger has passed.

Summer highs in Gonzales County reach 97°F — grow Broccoli as a spring or fall crop. Use shade cloth if planting in summer.

Common pests for Broccoli 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 6-8 weeks before last frost. Provide consistent moisture to prevent hollow stems. Harvest heads before yellow flowers appear.

Recommended Broccoli Varieties for Gonzales County

Heat-tolerant broccoli — plant as early spring or fall crop

Arcadia Marathon Green Magic

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Broccoli Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Allow plants to flower 2nd year; collect dry pods.
Storage Store airtight; viable 5 years at 35°F, under 50% humidity.

Isolate 1/2 mile from other brassicas. Biennial — must overwinter roots.

Frequently Asked Questions

When should I plant Broccoli in Gonzales County, TX?

Gonzales County is in Zone 9a with an average last frost of February 28. Plan your Broccoli planting based on this frost date — see the calendar above for exact timing.

What planting zone is Gonzales County, TX?

Gonzales County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 28 and first fall frost is November 28.

🌱

Your Gonzales County Garden Planner — Free

A 24-page printable planner built for Gonzales 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 Gonzales 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.