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When to Plant Horseradish in Huron County, OH

Horseradish is a vigorous perennial grown for its pungent, spicy roots used as a condiment. Once established, it can be difficult to eradicate, so choose its location carefully.

Huron County, Ohio is in USDA Zone 5b. The average last spring frost is April 27 and the first fall frost is October 18, giving you a growing season of approximately 174 days.

At an elevation of 1,242 feet, Huron County receives approximately 32.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Horseradish during the growing season.

Huron County, OH (Zone 5b) Moderate season
174 days
Last Spring Frost April 27
174 growing days
First Fall Frost October 18

Huron County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 7 🍅 Harvest: Sep 10 – Oct 22
Recommended (50%) ✗ May not fit
Transplant: May 11 🍅 Harvest: Sep 14 – Oct 26
Safe Start (90%) ✗ May not fit
Transplant: May 27 🍅 Harvest: Sep 30 – Nov 11

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
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 326 gal / 100 sq ft
Horseradish needs ~2,288 GDD — county provides 2,653 GDD Good fit

Horseradish Planting Timeline โ€” Huron County, OH

Horseradish Planting Calendar

Activity When Date Range
Transplant Outdoors May 11 May 11 โ€“ May 25
Harvest September 14 Sep 14 โ€“ Oct 26

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Transplant Outdoors
June โ€”
July โ€”
August โ€”
September Harvest
October Harvest
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

120โ€“180 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 5b

Growing Season

174 days

Growing Tips for Huron County

Plant root cuttings at a 45-degree angle in early spring. Harvest roots in late fall for strongest flavor. Contain the plant with barriers or grow in large containers.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Horseradish in Huron County, OH?

Huron County is in Zone 5b with an average last frost of April 27. Plan your Horseradish planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Huron County, OH?

Huron County, Ohio is in USDA Hardiness Zone 5b. The average last spring frost is April 27 and first fall frost is October 18.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Huron County gardeners in Zone 5b 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 Huron County, OH. Local conditions may vary. Last updated: April 2026.