Blog

When to Plant Cabbage in Cavalier County, ND

Cavalier County, North Dakota Zone 3b May

May in the garden — Cavalier County, North Dakota

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

Avg. last frost May 13
Avg. first frost September 28
Soil temp (4") 52°F
Watering Low
Pest pressure Low
Daylight 15 hrs
  1. Move cabbage from tray to bed

    Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.

  2. Outdoor sowing time: cabbage

    Succession planting is the secret here. Put in a row now, another in 2 weeks, a third in 4.

Coming up in June — start thinking about
  • Starting indoors: cabbage

Instant PDF download. No spam, unsubscribe any time.

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.

Cavalier County, North Dakota is in USDA Zone 3b. The average last spring frost is May 13 and the first fall frost is September 28, giving you a growing season of approximately 138 days.

At an elevation of 568 feet, Cavalier County receives approximately 27.9 inches of rainfall annually with predominantly loam soil. Summer highs average 78°F, so choose short-season varieties of Cabbage to ensure they mature before fall.

Cavalier County, ND (Zone 3b) Short season
138 days
Last Spring Frost May 13
138 growing days
First Fall Frost September 28

Cavalier County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (17 days to spare)
Start indoors: Mar 28 Transplant: May 9 🍅 Harvest: Jul 11 – Sep 5
Recommended (50%) ✓ Fits season (19 days to spare)
Start indoors: Apr 1 Transplant: May 13 🍅 Harvest: Jul 15 – Sep 9
Safe Start (90%) ✓ Fits season (17 days to spare)
Start indoors: Apr 15 Transplant: May 27 🍅 Harvest: Jul 29 – Sep 23

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 Cavalier County

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

Soil pH

Your soil pH (6.7–7.4) is within Cabbage's preferred range (6.0–7.5).

Soil Texture

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

Organic Matter

Organic matter is excellent (4.3%) — Cabbage will thrive.

How to Plant Cabbage

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

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Succession Planting Cabbage

2
successive plantings in your 138-day season

Sow every 6.9 weeks. Last sowing by Jun 20 to harvest before frost.

For a dedicated fall crop, sow by Jul 06.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 75 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 0.8" 0" ❄️ Dormant
Mar 1.7" 0" ❄️ Dormant
Apr 2.8" 0" ❄️ Dormant
May 3.9" 4.7" 0" ✅ Rainfall sufficient
Jun 3.9" 4.4" 0" ✅ Rainfall sufficient
Jul 3.9" 3.8" 0.1" 💧 Light watering
Aug 3.9" 2.9" 1" 💧 Light watering
Sep 3.9" 2.9" 1" 💧 Light watering
Oct 1.6" 0" ❄️ Dormant
Nov 0.9" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Cavalier 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 ~680 GDD — county provides 1,173 GDD Excellent fit

Cabbage Planting Timeline — Cavalier County, ND

Cabbage Planting Calendar

Activity When Date Range
Start Indoors April 1 Apr 1 – Apr 15
Transplant Outdoors May 13 May 13 – May 27
Direct Sow May 6 May 6 – May 27
Harvest July 15 Jul 15 – Sep 9
Fall Sowing July 6 Jul 6 – Jul 20

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 3b

📆 Growing Season

138 days in Cavalier County

Growing Tips for Cabbage in Cavalier County

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

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 Cavalier County, ND?

Cavalier County is in Zone 3b with an average last frost of May 13. Plan your Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Cavalier County, ND?

Cavalier County, North Dakota is in USDA Hardiness Zone 3b. The average last spring frost is May 13 and first fall frost is September 28.

🌱

Your Cavalier County Garden Planner — Free

A 24-page printable planner built for Cavalier County (Zone 3b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Cavalier County, ND. 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.