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When to Plant Horseradish in Geauga 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.

Geauga County, Ohio is in USDA Zone 5b. The average last spring frost is May 5 and the first fall frost is October 13, giving you a growing season of approximately 161 days.

At an elevation of 1,003 feet, Geauga County receives approximately 35.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86ยฐF, providing good warmth for Horseradish during the growing season.

Geauga County, OH (Zone 5b) Moderate season
161 days
Last Spring Frost May 5
161 growing days
First Fall Frost October 13

Geauga County Soil Profile

Soil Type

Silt Loam

Soil pH

5.9-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 13 🍅 Harvest: Sep 16 – Oct 28
Recommended (50%) ✗ May not fit
Transplant: May 19 🍅 Harvest: Sep 22 – Nov 3
Safe Start (90%) ✗ May not fit
Transplant: Jun 5 🍅 Harvest: Oct 9 – Nov 20

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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 91 gal / 100 sq ft
Horseradish needs ~2,175 GDD — county provides 2,334 GDD Good fit

Horseradish Planting Timeline โ€” Geauga County, OH

Horseradish Planting Calendar

Activity When Date Range
Transplant Outdoors May 19 May 19 โ€“ Jun 2
Harvest September 22 Sep 22 โ€“ Nov 3

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 Transplant Outdoors
July โ€”
August โ€”
September Harvest
October Harvest
November Harvest
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

161 days

Growing Tips for Geauga 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 Geauga County, OH?

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

What planting zone is Geauga County, OH?

Geauga County, Ohio is in USDA Hardiness Zone 5b. The average last spring frost is May 5 and first fall frost is October 13.

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Plan Your Garden with Confidence

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