When to Plant Corn in Geary County, KS
Corn is a warm-season grass grown for its sweet ears, which are best eaten soon after harvest. It is wind-pollinated and must be planted in blocks for good kernel fill.
Geary County, Kansas is in USDA Zone 6a. The average last spring frost is April 15 and the first fall frost is October 20, giving you a growing season of approximately 188 days.
At an elevation of 610 feet, Geary County receives approximately 31.2 inches of rainfall annually with predominantly loam soil. Summer highs average 88°F, providing good warmth for Corn during the growing season.
Geary County Soil Profile
Soil Type
Loam
Soil pH
6.4-7.8
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
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Corn Planting Timeline — Geary County, KS
Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 22 | Apr 22 – May 13 |
| Harvest | June 24 | Jun 24 – Aug 19 |
Plant 1" deep · 12" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
60–100 days
Soil pH
6 – 7
USDA Zone
Zone 6a
Growing Season
188 days
Growing Tips for Geary County
Plant in blocks of at least 4 rows rather than single rows for proper pollination. Direct sow after soil reaches 60F. Side-dress with nitrogen when plants are knee-high.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Corn in Other Locations
Frequently Asked Questions
When should I plant Corn in Geary County, KS?
Geary County is in Zone 6a with an average last frost of April 15. Plan your Corn planting based on this frost date — see the calendar above for exact timing.
What planting zone is Geary County, KS?
Geary County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 15 and first fall frost is October 20.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Geary County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.
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