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When to Plant Pac Choi in Chambers County, TX

Chambers County, Texas Zone 9b June

June in Chambers County, Texas — your action list

We've pulled the most time-sensitive tasks for Chambers County, Texas this June and put them front and centre. Tackle them in order.

Avg. last frost February 12
Avg. first frost December 6
Soil temp (4") 88°F
Watering Low
Pest pressure High
Daylight 13.9 hrs

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Pac choi (baby bok choy) is a compact variety of Chinese cabbage with tender leaves and crisp stems. It grows quickly and is ideal for containers and small spaces.

Chambers County, Texas is in USDA Zone 9b. The average last spring frost is February 12 and the first fall frost is December 6, giving you a growing season of approximately 297 days.

At an elevation of 1 feet, Chambers County receives approximately 66.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 99°F, so Pac Choi may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Pac Choi will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Pac Choi root diseases.

Chambers County, TX (Zone 9b) Year-round
297 days
Last Spring Frost February 12
297 growing days
First Fall Frost December 6

Chambers County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Pac Choi Planting Risk Windows

Early Start (70% safe) ✓ Fits season (238 days to spare)
Start indoors: Dec 27 Transplant: Jan 24 🍅 Harvest: Mar 7 – Apr 4
Recommended (50%) ✓ Fits season (227 days to spare)
Start indoors: Jan 15 Transplant: Feb 12 🍅 Harvest: Mar 26 – Apr 23
Safe Start (90%) ✓ Fits season (219 days to spare)
Start indoors: Feb 6 Transplant: Mar 6 🍅 Harvest: Apr 17 – May 15

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 Chambers County

How your county's soil matches Pac Choi's growing requirements.

Soil pH

Your soil pH (5.3–6.5) is more acidic than Pac Choi prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

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

How to Plant Pac Choi

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 Pac Choi

9
successive plantings in your 297-day season

Sow every 4.6 weeks. Last sowing by Oct 12 to harvest before frost.

For a dedicated fall crop, sow by Oct 11.

Pac Choi Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,507 gal / 100 sq ft

Monthly Watering Guide for Pac Choi

Pac Choi 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 Pac Choi Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 6.5" 2.3" 4.2" 🚿 Regular watering
Mar 6.5" 3.9" 2.6" 💧 Light watering
Apr 6.5" 6.6" 0" ✅ Rainfall sufficient
May 6.5" 10" 0" ✅ Rainfall sufficient
Jun 6.5" 11.3" 0" ✅ Rainfall sufficient
Jul 6.5" 8.5" 0" ✅ Rainfall sufficient
Aug 6.5" 7.2" 0" ✅ Rainfall sufficient
Sep 6.5" 6.4" 0.1" 💧 Light watering
Oct 6.5" 4.2" 2.3" 💧 Light watering
Nov 6.5" 2.4" 4.1" 🚿 Regular watering
Dec 6.5" 1.8" 4.7" 🚿 Regular watering

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

Pac Choi 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.

Pac Choi needs ~1,152 GDD — county provides 7,226 GDD Excellent fit

Pac Choi Planting Timeline — Chambers County, TX

Pac Choi Planting Calendar

Activity When Date Range
Start Indoors January 15 Jan 15 – Jan 29
Transplant Outdoors February 12 Feb 12 – Feb 26
Direct Sow January 22 Jan 22 – Feb 12
Harvest March 26 Mar 26 – Apr 23
Fall Sowing October 11 Oct 11 – Oct 25

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

40–55 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

297 days in Chambers County

Growing Tips for Pac Choi in Chambers County

Direct sow Pac Choi outdoors after February 12 in Chambers County when soil has warmed and frost danger has passed.

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

With summer highs reaching 99°F in Chambers County, provide afternoon shade for Pac Choi and water deeply in the morning.

Your generous 298.0-day season in Chambers County allows multiple plantings of Pac Choi. Sow every 20.0 days for continuous harvest.

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

General growing tips

Direct sow in spring or fall. Grows best in cool weather. Space 6 inches apart for baby pac choi. Harvest whole plants or cut outer leaves as needed.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Pac Choi in Chambers County, TX?

Chambers County is in Zone 9b with an average last frost of February 12. Plan your Pac Choi planting based on this frost date — see the calendar above for exact timing.

What planting zone is Chambers County, TX?

Chambers County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 12 and first fall frost is December 6.

🌱

Your Chambers County Garden Planner — Free

A 22-page printable planner built for Chambers 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 Chambers County, TX. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.