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When to Plant Chinese Cabbage in Runnels County, TX

Runnels County, Texas Zone 8a May

Your May planting checklist for Runnels County, Texas

Here's what deserves your attention in Runnels County, Texas this month. Everything below is tailored to Zone 8a and timed around your local frost dates.

Avg. last frost March 19
Avg. first frost November 15
Soil temp (4") 57°F
Watering Low
Pest pressure Moderate
Daylight 13.6 hrs
  1. Start harvesting chinese cabbage

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

To set up a strong June, finish these tasks
  • First harvests: chinese cabbage

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Chinese cabbage (Napa cabbage) forms elongated, barrel-shaped heads with tender, mild-flavored leaves. It is a staple in Asian cooking, particularly for kimchi.

Runnels County, Texas is in USDA Zone 8a. The average last spring frost is March 19 and the first fall frost is November 15, giving you a growing season of approximately 241 days.

At an elevation of 4,833 feet, Runnels County receives approximately 47.6 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Chinese Cabbage during the growing season.

Runnels County, TX (Zone 8a) Long season
241 days
Last Spring Frost March 19
241 growing days
First Fall Frost November 15

Runnels County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (161 days to spare)
Start indoors: Feb 2 Transplant: Mar 9 🍅 Harvest: May 4 – Jun 1
Recommended (50%) ✓ Fits season (157 days to spare)
Start indoors: Feb 12 Transplant: Mar 19 🍅 Harvest: May 14 – Jun 11
Safe Start (90%) ✓ Fits season (149 days to spare)
Start indoors: Mar 8 Transplant: Apr 12 🍅 Harvest: Jun 7 – 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 Runnels County

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

Soil pH

Your soil pH (6.3–7.1) is within Chinese Cabbage's preferred range (6.0–7.5).

Soil Texture

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

Organic Matter

Organic matter is low (2.0%). Add 2-3 inches of compost before planting Chinese Cabbage.

How to Plant Chinese Cabbage

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Chinese Cabbage

5
successive plantings in your 241-day season

Sow every 5.7 weeks. Last sowing by Sep 06 to harvest before frost.

For a dedicated fall crop, sow by Sep 06.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.8″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,438 gal / 100 sq ft

Monthly Watering Guide for Chinese Cabbage

Chinese Cabbage needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Chinese Cabbage Needs Rainfall You Supplement Action
Jan 1" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 6.5" 3" 3.5" 🚿 Regular watering
Apr 6.5" 4.9" 1.6" 💧 Light watering
May 6.5" 7.4" 0" ✅ Rainfall sufficient
Jun 6.5" 8.1" 0" ✅ Rainfall sufficient
Jul 6.5" 6.3" 0.2" 💧 Light watering
Aug 6.5" 5.1" 1.4" 💧 Light watering
Sep 6.5" 4.2" 2.3" 💧 Light watering
Oct 6.5" 3.2" 3.3" 🚿 Regular watering
Nov 6.5" 1.5" 5" 🚿 Regular watering
Dec 1.3" 0" ❄️ Dormant

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

Chinese 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.

Chinese Cabbage needs ~1,050 GDD — county provides 4,217 GDD Excellent fit

Chinese Cabbage Planting Timeline — Runnels County, TX

Chinese Cabbage Planting Calendar

Activity When Date Range
Start Indoors February 12 Feb 12 – Feb 26
Transplant Outdoors March 19 Mar 19 – Apr 2
Direct Sow March 5 Mar 5 – Mar 26
Harvest May 14 May 14 – Jun 11
Fall Sowing September 6 Sep 6 – Sep 20

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 8a

📆 Growing Season

241 days in Runnels County

Growing Tips for Chinese Cabbage in Runnels County

Direct sow Chinese Cabbage outdoors after March 19 in Runnels County when soil has warmed and frost danger has passed.

Common pests for Chinese Cabbage in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Best grown as a fall crop to avoid bolting. Start seeds indoors or direct sow in late summer. Keep soil consistently moist and provide shade in warm weather.

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 Chinese Cabbage in Runnels County, TX?

Runnels County is in Zone 8a with an average last frost of March 19. Plan your Chinese Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Runnels County, TX?

Runnels County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 19 and first fall frost is November 15.

🌱

Your Runnels County Garden Planner — Free

A 24-page printable planner built for Runnels County (Zone 8a). 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 Runnels 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.