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When to Plant Cabbage in Conroe, TX

Cabbage
Montgomery County, Texas Zone 9a June

June to-do list for Montgomery County, Texas

A quick June briefing for Montgomery County, Texas gardeners — what's urgent, what's next, and what can wait.

Avg. last frost February 18
Avg. first frost December 1
Soil temp (4") 84°F
Watering Low
Pest pressure High
Daylight 13.9 hrs
  1. Start harvesting cabbage

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

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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.

Conroe, Texas is in USDA Zone 9a. The average last spring frost is February 18 and the first fall frost is December 1, giving you a growing season of approximately 286 days.

At an elevation of 180 feet, Montgomery County receives approximately 62.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Cabbage may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Cabbage will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cabbage root diseases.

Conroe, TX (Zone 9a) Year-round
286 days
Last Spring Frost February 18
286 growing days
First Fall Frost December 1

Conroe Soil Profile

Soil Type

Sandy Loam

Soil pH

5.5-6.7

Drainage

Well Drained

Cabbage Planting Risk Windows

Early Start (70% safe) ✓ Fits season (168 days to spare)
Start indoors: Jan 13 Transplant: Feb 10 🍅 Harvest: Apr 14 – Jun 9
Recommended (50%) ✓ Fits season (167 days to spare)
Start indoors: Jan 21 Transplant: Feb 18 🍅 Harvest: Apr 22 – Jun 17
Safe Start (90%) ✓ Fits season (164 days to spare)
Start indoors: Feb 9 Transplant: Mar 9 🍅 Harvest: May 11 – Jul 6

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 Conroe

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

Soil pH

Your soil pH (5.5–6.7) overlaps with Cabbage's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is low (1.8%). 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 286-day season

Sow every 6.9 weeks. Last sowing by Aug 23 to harvest before frost.

For a dedicated fall crop, sow by Oct 06.

Cabbage Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 1.6" 0" ❄️ Dormant
Feb 3.9" 2.1" 1.8" 💧 Light watering
Mar 3.9" 4.5" 0" ✅ Rainfall sufficient
Apr 3.9" 6.5" 0" ✅ Rainfall sufficient
May 3.9" 8.2" 0" ✅ Rainfall sufficient
Jun 3.9" 11" 0" ✅ Rainfall sufficient
Jul 3.9" 8" 0" ✅ Rainfall sufficient
Aug 3.9" 7.1" 0" ✅ Rainfall sufficient
Sep 3.9" 5.3" 0" ✅ Rainfall sufficient
Oct 3.9" 4.2" 0" ✅ Rainfall sufficient
Nov 3.9" 2" 1.9" 💧 Light watering
Dec 3.9" 1.6" 2.3" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Montgomery 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 ~1,760 GDD — county provides 6,314 GDD Excellent fit

Cabbage Planting Timeline — Conroe, TX

Cabbage Planting Calendar

Activity When Date Range
Start Indoors January 21 Jan 21 – Feb 4
Transplant Outdoors February 18 Feb 18 – Mar 4
Direct Sow January 28 Jan 28 – Feb 18
Harvest April 22 Apr 22 – Jun 17
Fall Sowing October 6 Oct 6 – Oct 20

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

Month-by-Month Timeline

MonthActivities
January Start Indoors Direct Sow
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

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

286 days in Montgomery County

Growing Tips for Cabbage in Conroe

Direct sow Cabbage outdoors after February 18 in Montgomery County when soil has warmed and frost danger has passed.

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

Summer highs in Montgomery County reach 96°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 →

🌱

Your Montgomery County Garden Planner — Free

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