When to Plant Cauliflower in Bingham County, ID
Cauliflower is a cool-season brassica that produces dense white, purple, or green heads called curds. It is more finicky than broccoli but rewards with a mild, nutty flavor.
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 Cauliflower 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
Cauliflower Planting Timeline — Bingham County, ID
Cauliflower Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 16 | Apr 16 – Apr 30 |
| Transplant Outdoors | May 21 | May 21 – Jun 4 |
| Direct Sow | May 7 | May 7 – May 28 |
| Fall Sowing | July 13 | Jul 13 – Jul 27 |
| Harvest | July 16 | Jul 16 – Sep 17 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors |
| July | Fall Sowing Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
High — keep soil consistently moist
Days to Maturity
55–100 days
Soil pH
6 – 7
USDA Zone
Zone 5a
Growing Season
123 days
Growing Tips for Bingham County
Start seeds indoors 6 weeks before transplanting. Blanch white varieties by tying outer leaves over the head. Provide consistent moisture and avoid temperature extremes.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Cauliflower in Other Locations
Frequently Asked Questions
When should I plant Cauliflower in Bingham County, ID?
Bingham County is in Zone 5a with an average last frost of May 21. Plan your Cauliflower 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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