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When to Plant Horseradish in Nemaha County, NE

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.

Nemaha County, Nebraska is in USDA Zone 5b. The average last spring frost is April 24 and the first fall frost is October 7, giving you a growing season of approximately 166 days.

At an elevation of 510 feet, Nemaha County receives approximately 23.7 inches of rainfall annually with predominantly loam soil. Summer highs average 87ยฐF, providing good warmth for Horseradish during the growing season.

Nemaha County, NE (Zone 5b) Moderate season
166 days
Last Spring Frost April 24
166 growing days
First Fall Frost October 7

Nemaha County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 5 🍅 Harvest: Sep 8 – Oct 20
Recommended (50%) ✗ May not fit
Transplant: May 8 🍅 Harvest: Sep 11 – Oct 23
Safe Start (90%) ✗ May not fit
Transplant: May 25 🍅 Harvest: Sep 28 – Nov 9

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
0.6″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 710 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Horseradish needs ~2,288 GDD — county provides 2,531 GDD Good fit

Horseradish Planting Timeline โ€” Nemaha County, NE

Horseradish Planting Calendar

Activity When Date Range
Transplant Outdoors May 8 May 8 โ€“ May 22
Harvest September 11 Sep 11 โ€“ Oct 23

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

166 days

Growing Tips for Nemaha 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 Nemaha County, NE?

Nemaha County is in Zone 5b with an average last frost of April 24. Plan your Horseradish planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Nemaha County, NE?

Nemaha County, Nebraska is in USDA Hardiness Zone 5b. The average last spring frost is April 24 and first fall frost is October 7.

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Plan Your Garden with Confidence

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