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When to Plant Endive in Logan County, ND

Logan County, North Dakota Zone 4a June

June in Logan County, North Dakota — your action list

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

Avg. last frost May 13
Avg. first frost September 28
Soil temp (4") 64°F
Watering Low
Pest pressure High
Daylight 15.6 hrs
  1. Begin indoor sowing: endive

    These need a head start before your last frost (May 13). Sow into cells now so you're ready to transplant in a few weeks.

July will be here before you know it — start on
  • First harvests: endive
  • Fall sowing: endive

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Endive is a leafy green with a slightly bitter flavor, available in curly (frisee) and broad-leaved (escarole) types. It adds texture and complexity to salads.

Logan County, North Dakota is in USDA Zone 4a. 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 1,073 feet, Logan County receives approximately 25.2 inches of rainfall annually with predominantly loam soil. Summer highs average 82°F, so choose short-season varieties of Endive to ensure they mature before fall.

Logan County, ND (Zone 4a) Short season
138 days
Last Spring Frost May 13
138 growing days
First Fall Frost September 28

Logan County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.7

Drainage

Well Drained

Endive Planting Risk Windows

Early Start (70% safe) ✓ Fits season (53 days to spare)
Start indoors: Mar 26 Transplant: May 7 🍅 Harvest: Jun 25 – Jul 30
Recommended (50%) ✓ Fits season (54 days to spare)
Start indoors: Apr 1 Transplant: May 13 🍅 Harvest: Jul 1 – Aug 5
Safe Start (90%) ✓ Fits season (51 days to spare)
Start indoors: Apr 14 Transplant: May 26 🍅 Harvest: Jul 14 – Aug 18

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 Logan County

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

Soil pH

Your soil pH (6.5–7.7) is more alkaline than Endive prefers (5.5–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.1%) — Endive will thrive.

How to Plant 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.

Succession Planting Endive

3
successive plantings in your 138-day season

Sow every 5.1 weeks. Last sowing by Jul 25 to harvest before frost.

For a dedicated fall crop, sow by Jul 06.

Endive Water Budget

Plant needs
0.7″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Endive

Endive needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Endive Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.5" 0" ❄️ Dormant
Apr 2.8" 0" ❄️ Dormant
May 3" 3.8" 0" ✅ Rainfall sufficient
Jun 3" 3.9" 0" ✅ Rainfall sufficient
Jul 3" 3.3" 0" ✅ Rainfall sufficient
Aug 3" 2.9" 0.1" 💧 Light watering
Sep 3" 2.5" 0.5" 💧 Light watering
Oct 1.5" 0" ❄️ Dormant
Nov 0.9" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

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

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.

Endive needs ~632 GDD — county provides 1,587 GDD Excellent fit

Endive Planting Timeline — Logan County, ND

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 July 1 Jul 1 – Aug 5
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 Harvest
August Harvest
September
October
November
December

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

45–65 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 4a

📆 Growing Season

138 days in Logan County

Growing Tips for Endive in Logan County

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

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

General growing tips

Sow seeds directly in spring or fall. Blanch heads by tying outer leaves together 2-3 weeks before harvest to reduce bitterness. Keep soil evenly moist.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Endive in Logan County, ND?

Logan County is in Zone 4a with an average last frost of May 13. Plan your Endive planting based on this frost date — see the calendar above for exact timing.

What planting zone is Logan County, ND?

Logan County, North Dakota is in USDA Hardiness Zone 4a. The average last spring frost is May 13 and first fall frost is September 28.

🌱

Your Logan County Garden Planner — Free

A 22-page printable planner built for Logan County (Zone 4a). 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 Logan County, ND. 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.