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When to Plant Broccoli in Kinney County, TX

Kinney County, Texas Zone 9a May

Top priorities for Kinney County, Texas gardeners in May

May is a pivotal month for Kinney County, Texas gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost February 22
Avg. first frost November 30
Soil temp (4") 73°F
Watering High
Pest pressure High
Daylight 13.5 hrs
  1. Collect broccoli at their peak

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

June will be here before you know it — start on
  • 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.

Kinney County, Texas is in USDA Zone 9a. The average last spring frost is February 22 and the first fall frost is November 30, giving you a growing season of approximately 281 days.

At an elevation of 1,375 feet, Kinney County receives approximately 52.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 101°F, so Broccoli may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — 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.

Kinney County, TX (Zone 9a) Year-round
281 days
Last Spring Frost February 22
281 growing days
First Fall Frost November 30

Kinney County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.4-8.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (180 days to spare)
Start indoors: Jan 16 Transplant: Feb 13 🍅 Harvest: Apr 17 – May 29
Recommended (50%) ✓ Fits season (176 days to spare)
Start indoors: Jan 25 Transplant: Feb 22 🍅 Harvest: Apr 26 – Jun 7
Safe Start (90%) ✓ Fits season (168 days to spare)
Start indoors: Feb 18 Transplant: Mar 18 🍅 Harvest: May 20 – Jul 1

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 Kinney County

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

Soil pH

Your soil pH (7.4–8.6) is more alkaline than Broccoli prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Kinney County warms quickly in spring but drains fast. Broccoli will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.1%). Add 2-3 inches of compost before planting 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 281-day season

Sow every 6.9 weeks. Last sowing by Sep 01 to harvest before frost.

For a dedicated fall crop, sow by Oct 05.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 670 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 3.4" 0" ❄️ Dormant
Feb 4.3" 3.3" 1" 💧 Light watering
Mar 4.3" 3" 1.3" 💧 Light watering
Apr 4.3" 1.7" 2.6" 🚿 Regular watering
May 4.3" 1.3" 3" 🚿 Regular watering
Jun 4.3" 2" 2.3" 🚿 Regular watering
Jul 4.3" 8.2" 0" ✅ Rainfall sufficient
Aug 4.3" 10.4" 0" ✅ Rainfall sufficient
Sep 4.3" 7.6" 0" ✅ Rainfall sufficient
Oct 4.3" 4" 0.3" 💧 Light watering
Nov 4.3" 3.4" 0.9" 💧 Light watering
Dec 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (Feb–Nov in Kinney 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 ~1,931 GDD — county provides 7,261 GDD Excellent fit

Broccoli Planting Timeline — Kinney County, TX

Broccoli Planting Calendar

Activity When Date Range
Start Indoors January 25 Jan 25 – Feb 8
Transplant Outdoors February 22 Feb 22 – Mar 8
Direct Sow February 1 Feb 1 – Feb 22
Harvest April 26 Apr 26 – Jun 7
Fall Sowing October 5 Oct 5 – Oct 19

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 Harvest
May Harvest
June Harvest
July
August
September
October Fall Sowing
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 9a

📆 Growing Season

281 days in Kinney County

Growing Tips for Broccoli in Kinney County

Direct sow Broccoli outdoors after February 22 in Kinney County when soil has warmed and frost danger has passed.

Sandy soil in Kinney County dries quickly — mulch Broccoli with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Summer highs in Kinney County reach 101°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 Kinney 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 Kinney County, TX?

Kinney County is in Zone 9a with an average last frost of February 22. Plan your Broccoli planting based on this frost date — see the calendar above for exact timing.

What planting zone is Kinney County, TX?

Kinney County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 22 and first fall frost is November 30.

🌱

Your Kinney County Garden Planner — Free

A 24-page printable planner built for Kinney 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 Kinney 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.