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When to Plant Belgian Endive in Woodbury County, IA

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.

Woodbury County, Iowa is in USDA Zone 4b. The average last spring frost is April 26 and the first fall frost is October 6, giving you a growing season of approximately 163 days.

At an elevation of 1,388 feet, Woodbury County receives approximately 40.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80ยฐF, so choose short-season varieties of Belgian Endive to ensure they mature before fall.

Woodbury County, IA (Zone 4b) Moderate season
163 days
Last Spring Frost April 26
163 growing days
First Fall Frost October 6

Woodbury County Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (22 days to spare)
Start indoors: Mar 6 Transplant: Apr 17 🍅 Harvest: Aug 7 – Sep 11
Recommended (50%) ✓ Fits season (16 days to spare)
Start indoors: Mar 15 Transplant: Apr 26 🍅 Harvest: Aug 16 – Sep 20
Safe Start (90%) ✓ Fits season (20 days to spare)
Start indoors: Mar 30 Transplant: May 11 🍅 Harvest: Aug 31 – Oct 5

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 383 gal / 100 sq ft
Belgian Endive needs ~1,300 GDD — county provides 1,630 GDD Good fit

Belgian Endive Planting Timeline โ€” Woodbury County, IA

Belgian Endive Planting Calendar

Activity When Date Range
Start Indoors March 15 Mar 15 โ€“ Mar 29
Transplant Outdoors April 26 Apr 26 โ€“ May 10
Direct Sow April 19 Apr 19 โ€“ May 10
Fall Sowing July 14 Jul 14 โ€“ Jul 28
Harvest August 16 Aug 16 โ€“ Sep 20

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

110โ€“150 days

Soil pH

5.5 โ€“ 7

USDA Zone

Zone 4b

Growing Season

163 days

Growing Tips for Woodbury County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Belgian Endive in Woodbury County, IA?

Woodbury County is in Zone 4b with an average last frost of April 26. Plan your Belgian Endive planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Woodbury County, IA?

Woodbury County, Iowa is in USDA Hardiness Zone 4b. The average last spring frost is April 26 and first fall frost is October 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Woodbury County gardeners in Zone 4b organize planting dates, track what's growing, and never miss a planting window.

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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 Woodbury County, IA. Local conditions may vary. Last updated: April 2026.