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When to Plant Caraway in Hancock County, IA

Caraway is a biennial herb grown for its distinctive crescent-shaped seeds used in rye bread, sauerkraut, and European cuisine. The leaves and roots are also edible.

Hancock County, Iowa is in USDA Zone 4b. The average last spring frost is April 29 and the first fall frost is October 7, giving you a growing season of approximately 161 days.

At an elevation of 979 feet, Hancock County receives approximately 36.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83ยฐF, so choose short-season varieties of Caraway to ensure they mature before fall.

Hancock County, IA (Zone 4b) Moderate season
161 days
Last Spring Frost April 29
161 growing days
First Fall Frost October 7

Hancock County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Start indoors: Mar 11 Transplant: Apr 15
Recommended (50%) ✓ Fits season
Start indoors: Mar 18 Transplant: Apr 22
Safe Start (90%) ✓ Fits season
Start indoors: Apr 1 Transplant: May 6

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
0.0″/week
Watering frequency Only during dry spells
Season total 54 gal / 100 sq ft
Caraway needs ~4,992 GDD — county provides 1,972 GDD May not mature

Caraway Planting Timeline โ€” Hancock County, IA

Caraway Planting Calendar

Activity When Date Range
Start Indoors March 18 Mar 18 โ€“ Apr 1
Transplant Outdoors April 22 Apr 22 โ€“ May 6
Direct Sow April 22 Apr 22 โ€“ May 13
Fall Sowing July 15 Jul 15 โ€“ Jul 29

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

365โ€“450 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 4b

Growing Season

161 days

Growing Tips for Hancock County

Direct sow in spring or fall. Caraway produces seeds in its second year. Harvest seed heads when they turn brown. The young leaves can be used like parsley.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Level Up Your Garden

Frequently Asked Questions

When should I plant Caraway in Hancock County, IA?

Hancock County is in Zone 4b with an average last frost of April 29. Plan your Caraway planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Hancock County, IA?

Hancock County, Iowa is in USDA Hardiness Zone 4b. The average last spring frost is April 29 and first fall frost is October 7.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Hancock 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 Hancock County, IA. Local conditions may vary. Last updated: April 2026.