When to Plant Cauliflower in Hidalgo County, TX
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.
Hidalgo County, Texas is in USDA Zone 9b. The average last spring frost is February 6 and the first fall frost is December 18, giving you a growing season of approximately 315 days.
At an elevation of 4,081 feet, Hidalgo County receives approximately 67 inches of rainfall annually with predominantly loam soil. Summer highs average 100°F, so Cauliflower may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cauliflower root diseases.
Hidalgo County Soil Profile
Soil Type
Loam
Soil pH
6.2-7.8
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
Cauliflower Planting Timeline — Hidalgo County, TX
Cauliflower Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 9 | Jan 9 – Jan 23 |
| Transplant Outdoors | February 6 | Feb 6 – Feb 20 |
| Direct Sow | January 16 | Jan 16 – Feb 6 |
| Fall Sowing | October 23 | Oct 23 – Nov 6 |
| Harvest | April 3 | Apr 3 – Jun 5 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Transplant Outdoors Direct Sow |
| March | — |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | Fall Sowing |
| 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 9b
Growing Season
315 days
Growing Tips for Hidalgo 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 Hidalgo County, TX?
Hidalgo County is in Zone 9b with an average last frost of February 6. Plan your Cauliflower planting based on this frost date — see the calendar above for exact timing.
What planting zone is Hidalgo County, TX?
Hidalgo County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 6 and first fall frost is December 18.
Plan Your Garden with Confidence
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