When to Plant Sweet Corn in Coleman County, TX
Sweet corn is bred for high sugar content in its kernels, which convert to starch rapidly after harvest. Modern supersweet varieties hold their sweetness longer.
Coleman County, Texas is in USDA Zone 7b. The average last spring frost is March 17 and the first fall frost is November 16, giving you a growing season of approximately 244 days.
At an elevation of 1,129 feet, Coleman County receives approximately 59.4 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Sweet Corn during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sweet Corn root diseases.
Coleman 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
Sweet Corn Planting Timeline — Coleman County, TX
Sweet Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | March 24 | Mar 24 – Apr 14 |
| Harvest | May 26 | May 26 – Jul 7 |
Plant 1" deep · 12" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Direct Sow |
| April | Direct Sow |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
60–90 days
Soil pH
6 – 7
USDA Zone
Zone 7b
Growing Season
244 days
Growing Tips for Coleman County
Plant in blocks of at least 4 rows for wind pollination. Direct sow after soil is warm. Isolate supersweet varieties from other corn types to prevent cross-pollination.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Sweet Corn in Other Locations
Frequently Asked Questions
When should I plant Sweet Corn in Coleman County, TX?
Coleman County is in Zone 7b with an average last frost of March 17. Plan your Sweet Corn planting based on this frost date — see the calendar above for exact timing.
What planting zone is Coleman County, TX?
Coleman County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 17 and first fall frost is November 16.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Coleman County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.
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