When to Plant Cauliflower in Saguache County, CO
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.
Saguache County, Colorado is in USDA Zone 4b. The average last spring frost is May 30 and the first fall frost is September 20, giving you a growing season of approximately 113 days.
At an elevation of 5,293 feet, Saguache County receives approximately 23.7 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Cauliflower to ensure they mature before fall.
Saguache County Soil Profile
Soil Type
Loam
Soil pH
6.4-8.4
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 — Saguache County, CO
Cauliflower Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 18 | Apr 18 – May 2 |
| Transplant Outdoors | May 30 | May 30 – Jun 13 |
| Direct Sow | May 23 | May 23 – Jun 13 |
| Fall Sowing | June 28 | Jun 28 – Jul 12 |
| Harvest | July 25 | Jul 25 – Sep 26 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Start Indoors Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow Fall Sowing |
| 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 4b
Growing Season
113 days
Growing Tips for Saguache 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 Saguache County, CO?
Saguache County is in Zone 4b with an average last frost of May 30. Plan your Cauliflower planting based on this frost date — see the calendar above for exact timing.
What planting zone is Saguache County, CO?
Saguache County, Colorado is in USDA Hardiness Zone 4b. The average last spring frost is May 30 and first fall frost is September 20.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Saguache County gardeners in Zone 4b organize planting dates, track what's growing, and never miss a planting window.
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