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When to Plant Cabbage in Carter County, OK

Carter County, Oklahoma Zone 8a May

This month in Carter County, Oklahoma

Each item below is timed to Carter County, Oklahoma's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost March 28
Avg. first frost November 2
Soil temp (4") 70°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
  1. Sow cabbage in trays indoors

    Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.

  2. Basket week: cabbage

    If you can't use it all right away, check the food-preservation section of your planner.

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.

Carter County, Oklahoma is in USDA Zone 8a. The average last spring frost is March 28 and the first fall frost is November 2, giving you a growing season of approximately 219 days.

At an elevation of 648 feet, Carter County receives approximately 34.2 inches of rainfall annually with predominantly loam soil. Summer highs average 93°F, providing good warmth for Cabbage during the growing season.

Carter County, OK (Zone 8a) Long season
219 days
Last Spring Frost March 28
219 growing days
First Fall Frost November 2
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Carter County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (102 days to spare)
Start indoors: Feb 14 Transplant: Mar 21 🍅 Harvest: May 23 – Jul 18
Recommended (50%) ✓ Fits season (100 days to spare)
Start indoors: Feb 21 Transplant: Mar 28 🍅 Harvest: May 30 – Jul 25
Safe Start (90%) ✓ Fits season (101 days to spare)
Start indoors: Mar 13 Transplant: Apr 17 🍅 Harvest: Jun 19 – Aug 14

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 Carter County

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

Soil pH

Your soil pH (6.4–7.5) is within Cabbage's preferred range (6.0–7.5).

Soil Texture

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

Drainage

Drainage is adequate for Cabbage.

Organic Matter

Organic matter is moderate (3.3%). Annual compost additions will help Cabbage.

How to Plant 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 Cabbage

4
successive plantings in your 219-day season

Sow every 6.9 weeks. Last sowing by Jul 25 to harvest before frost.

For a dedicated fall crop, sow by Aug 24.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.7″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,202 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 0.8" 0" ❄️ Dormant
Feb 1.3" 0" ❄️ Dormant
Mar 3.9" 1.9" 2" 🚿 Regular watering
Apr 3.9" 3.1" 0.8" 💧 Light watering
May 3.9" 5.8" 0" ✅ Rainfall sufficient
Jun 3.9" 6" 0" ✅ Rainfall sufficient
Jul 3.9" 4.3" 0" ✅ Rainfall sufficient
Aug 3.9" 3.9" 0" ✅ Rainfall sufficient
Sep 3.9" 2.8" 1.1" 💧 Light watering
Oct 3.9" 2.3" 1.6" 💧 Light watering
Nov 3.9" 1.2" 2.7" 🚿 Regular watering
Dec 0.9" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Carter 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 ~1,580 GDD — county provides 4,325 GDD Excellent fit

Cabbage Planting Timeline — Carter County, OK

Cabbage Planting Calendar

Activity When Date Range
Start Indoors February 21 Feb 21 – Mar 7
Transplant Outdoors March 28 Mar 28 – Apr 11
Direct Sow March 14 Mar 14 – Apr 4
Harvest May 30 May 30 – Jul 25
Fall Sowing August 24 Aug 24 – Sep 7

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · 1-2 times/week

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 8a

📆 Growing Season

219 days in Carter County

Growing Tips for Cabbage in Carter County

Direct sow Cabbage outdoors after March 28 in Carter County when soil has warmed and frost danger has passed.

Summer highs in Carter County reach 93°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 Carter County, OK?

Carter County is in Zone 8a with an average last frost of March 28. Plan your Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Carter County, OK?

Carter County, Oklahoma is in USDA Hardiness Zone 8a. The average last spring frost is March 28 and first fall frost is November 2.

🌱

Your Carter County Garden Planner — Free

A 24-page printable planner built for Carter 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 Carter County, OK. 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.