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When to Plant Belgian Endive in Cavalier County, ND

Cavalier County, North Dakota Zone 3b May

Top priorities for Cavalier County, North Dakota gardeners in May

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Cavalier County, North Dakota.

Avg. last frost May 13
Avg. first frost September 28
Soil temp (4") 52°F
Watering Low
Pest pressure Low
Daylight 15 hrs
  1. Harden off and plant belgian endive

    Your last frost (May 13) has passed. These warm-season crops can handle outdoor soil now.

  2. Sow belgian endive where they'll grow

    Thin ruthlessly once seedlings are up. Crowded roots mean smaller crops from every plant.

Looking ahead to June
  • Starting indoors: belgian endive

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Belgian endive is produced by forcing chicory roots in darkness to create tight, pale, torpedo-shaped heads called chicons. They have a mild bitterness and elegant crunch.

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 Belgian Endive 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 (10 days to spare)
Start indoors: Mar 28 Transplant: May 9 🍅 Harvest: Aug 29 – Sep 12
Recommended (50%) ✓ Fits season (12 days to spare)
Start indoors: Apr 1 Transplant: May 13 🍅 Harvest: Sep 2 – Sep 16
Safe Start (90%) ✓ Fits season (10 days to spare)
Start indoors: Apr 15 Transplant: May 27 🍅 Harvest: Sep 16 – Sep 30

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 Belgian Endive's growing requirements.

Soil pH

Your soil pH (6.7–7.4) is more alkaline than Belgian Endive prefers (5.5–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

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

How to Plant Belgian Endive

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 222 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Belgian Endive

Belgian Endive needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Belgian Endive 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 4.3" 4.7" 0" ✅ Rainfall sufficient
Jun 4.3" 4.4" 0" ✅ Rainfall sufficient
Jul 4.3" 3.8" 0.5" 💧 Light watering
Aug 4.3" 2.9" 1.4" 💧 Light watering
Sep 4.3" 2.9" 1.4" 💧 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.

Belgian Endive 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.

Belgian Endive needs ~1,105 GDD — county provides 1,173 GDD Good fit

Belgian Endive Planting Timeline — Cavalier County, ND

Belgian Endive 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 September 2 Sep 2 – Sep 16
Fall Sowing July 6 Jul 6 – Jul 20

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

110–150 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 3b

📆 Growing Season

138 days in Cavalier County

Growing Tips for Belgian Endive in Cavalier County

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

Your 138.0-day growing season in Cavalier County is tight for Belgian Endive (110.0-150.0 days to maturity). Start indoors and choose early-maturing varieties.

Common pests for Belgian Endive in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Grow chicory roots in the garden during summer, then dig in fall. Trim tops and force roots in moist sand in a dark cellar at 50-60F. Chicons emerge in 3-4 weeks.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Belgian Endive in Cavalier County, ND?

Cavalier County is in Zone 3b with an average last frost of May 13. Plan your Belgian Endive 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.

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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 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.