When to Plant Horseradish in Bingham County, ID
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.
Bingham County, Idaho is in USDA Zone 5a. The average last spring frost is May 21 and the first fall frost is September 21, giving you a growing season of approximately 123 days.
At an elevation of 8,345 feet, Bingham County receives approximately 24.5 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Horseradish during the growing season.
Bingham County Soil Profile
Soil Type
Loam
Soil pH
6.3-7.7
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 — Bingham County, ID
Horseradish Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | June 4 | Jun 4 – Jun 18 |
| Harvest | October 8 | Oct 8 – Nov 19 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | Transplant Outdoors |
| July | — |
| August | — |
| September | — |
| 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 5a
Growing Season
123 days
Growing Tips for Bingham 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 Bingham County, ID?
Bingham County is in Zone 5a with an average last frost of May 21. Plan your Horseradish planting based on this frost date — see the calendar above for exact timing.
What planting zone is Bingham County, ID?
Bingham County, Idaho is in USDA Hardiness Zone 5a. The average last spring frost is May 21 and first fall frost is September 21.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Bingham County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
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