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When to Plant Broccoli in Orange County, TX

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.

Orange County, Texas is in USDA Zone 9a. The average last spring frost is February 12 and the first fall frost is December 11, giving you a growing season of approximately 302 days.

At an elevation of 231 feet, Orange County receives approximately 63.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 98ยฐF, so Broccoli may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Broccoli will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Broccoli root diseases.

Orange County, TX (Zone 9a) Year-round
302 days
Last Spring Frost February 12
302 growing days
First Fall Frost December 11

Orange County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (210 days to spare)
Start indoors: Dec 24 Transplant: Jan 21 🍅 Harvest: Mar 25 – May 6
Recommended (50%) ✓ Fits season (197 days to spare)
Start indoors: Jan 15 Transplant: Feb 12 🍅 Harvest: Apr 16 – May 28
Safe Start (90%) ✓ Fits season (190 days to spare)
Start indoors: Feb 5 Transplant: Mar 5 🍅 Harvest: May 7 – Jun 18

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 392 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Broccoli needs ~1,762 GDD — county provides 7,120 GDD Excellent fit

Broccoli Planting Timeline โ€” Orange County, TX

Broccoli Planting Calendar

Activity When Date Range
Start Indoors January 15 Jan 15 โ€“ Jan 29
Transplant Outdoors February 12 Feb 12 โ€“ Feb 26
Direct Sow January 22 Jan 22 โ€“ Feb 12
Fall Sowing October 16 Oct 16 โ€“ Oct 30
Harvest April 16 Apr 16 โ€“ May 28

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

60โ€“90 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 9a

Growing Season

302 days

Growing Tips for Orange County

Start seeds indoors 6-8 weeks before last frost. Provide consistent moisture to prevent hollow stems. Harvest heads before yellow flowers appear.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Level Up Your Garden

๐ŸŒพ 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 35ยฐF, under 50% humidity.

Isolate 1/2 mile from other brassicas. Biennial โ€” must overwinter roots.

Frequently Asked Questions

When should I plant Broccoli in Orange County, TX?

Orange County is in Zone 9a with an average last frost of February 12. Plan your Broccoli planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Orange County, TX?

Orange County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 12 and first fall frost is December 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Orange County gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.

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Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Orange County, TX. Local conditions may vary. Last updated: April 2026.