When to Plant Horseradish in Butler 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.
Butler County, Ohio is in USDA Zone 6a. The average last spring frost is April 20 and the first fall frost is October 21, giving you a growing season of approximately 184 days.
At an elevation of 704 feet, Butler County receives approximately 37.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Horseradish during the growing season.
Butler County Soil Profile
Soil Type
Silt Loam
Soil pH
5.9-7
Drainage
Well Drained
Plant Planting Risk Windows
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
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Horseradish Planting Timeline — Butler County, OH
Horseradish Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 4 | May 4 – May 18 |
| Harvest | September 7 | Sep 7 – Nov 16 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | — |
| July | — |
| August | — |
| September | Harvest |
| October | Harvest |
| November | Harvest |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
120–180 days
Soil pH
6 – 7.5
USDA Zone
Zone 6a
Growing Season
184 days
Growing Tips for Butler 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
Horseradish in Other Locations
Frequently Asked Questions
When should I plant Horseradish in Butler County, OH?
Butler County is in Zone 6a with an average last frost of April 20. Plan your Horseradish planting based on this frost date — see the calendar above for exact timing.
What planting zone is Butler County, OH?
Butler County, Ohio is in USDA Hardiness Zone 6a. The average last spring frost is April 20 and first fall frost is October 21.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Butler County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.
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