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When to Plant Cabbage in Kleberg County, TX

Kleberg County, Texas Zone 9b May

Your May gardening checklist

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

Avg. last frost February 13
Avg. first frost December 9
Soil temp (4") 79°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. Collect cabbage at their peak

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

Get ahead of June
  • First harvests: cabbage

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Cabbage is a versatile cool-season crop that forms dense, leafy heads in green, red, or savoy varieties. It is a staple for coleslaw, sauerkraut, and many global cuisines.

Kleberg County, Texas is in USDA Zone 9b. The average last spring frost is February 13 and the first fall frost is December 9, giving you a growing season of approximately 299 days.

At an elevation of 1,079 feet, Kleberg County receives approximately 64.4 inches of rainfall annually with predominantly loam soil. Summer highs average 102°F, so Cabbage may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cabbage root diseases.

Kleberg County, TX (Zone 9b) Year-round
299 days
Last Spring Frost February 13
299 growing days
First Fall Frost December 9

Kleberg County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (195 days to spare)
Start indoors: Dec 23 Transplant: Jan 20 🍅 Harvest: Mar 24 – May 19
Recommended (50%) ✓ Fits season (180 days to spare)
Start indoors: Jan 16 Transplant: Feb 13 🍅 Harvest: Apr 17 – Jun 12
Safe Start (90%) ✓ Fits season (168 days to spare)
Start indoors: Feb 8 Transplant: Mar 8 🍅 Harvest: May 10 – Jul 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 Kleberg County

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

Soil pH

Your soil pH (6.7–7.6) overlaps with Cabbage's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Cabbage

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 Cabbage

5
successive plantings in your 299-day season

Sow every 6.9 weeks. Last sowing by Aug 31 to harvest before frost.

For a dedicated fall crop, sow by Oct 14.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/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 Cabbage

Cabbage needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Cabbage Needs Rainfall You Supplement Action
Jan 1.7" 0" ❄️ Dormant
Feb 3.9" 2" 1.9" 💧 Light watering
Mar 3.9" 4.3" 0" ✅ Rainfall sufficient
Apr 3.9" 7.4" 0" ✅ Rainfall sufficient
May 3.9" 10.2" 0" ✅ Rainfall sufficient
Jun 3.9" 9.8" 0" ✅ Rainfall sufficient
Jul 3.9" 8.2" 0" ✅ Rainfall sufficient
Aug 3.9" 6.5" 0" ✅ Rainfall sufficient
Sep 3.9" 6" 0" ✅ Rainfall sufficient
Oct 3.9" 4.3" 0" ✅ Rainfall sufficient
Nov 3.9" 2.3" 1.6" 💧 Light watering
Dec 3.9" 1.7" 2.2" 🚿 Regular watering

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

Cabbage 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.

Cabbage needs ~2,120 GDD — county provides 7,950 GDD Excellent fit

Cabbage Planting Timeline — Kleberg County, TX

Cabbage Planting Calendar

Activity When Date Range
Start Indoors January 16 Jan 16 – Jan 30
Transplant Outdoors February 13 Feb 13 – Feb 27
Direct Sow January 23 Jan 23 – Feb 13
Harvest April 17 Apr 17 – Jun 12
Fall Sowing October 14 Oct 14 – Oct 28

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 9b

📆 Growing Season

299 days in Kleberg County

Growing Tips for Cabbage in Kleberg County

Direct sow Cabbage outdoors after February 13 in Kleberg County when soil has warmed and frost danger has passed.

Summer highs in Kleberg County reach 102°F — grow Cabbage as a spring or fall crop. Use shade cloth if planting in summer.

Common pests for Cabbage 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 4-6 weeks before last frost. Space plants 18-24 inches apart. Keep soil evenly moist to prevent heads from splitting.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cabbage in Kleberg County, TX?

Kleberg County is in Zone 9b with an average last frost of February 13. Plan your Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Kleberg County, TX?

Kleberg County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 13 and first fall frost is December 9.

🌱

Your Kleberg County Garden Planner — Free

A 24-page printable planner built for Kleberg County (Zone 9b). 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 Kleberg 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.