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When to Plant Corn in Christian County, MO

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.

Christian County, Missouri is in USDA Zone 6b. The average last spring frost is April 14 and the first fall frost is October 21, giving you a growing season of approximately 190 days.

At an elevation of 983 feet, Christian County receives approximately 34.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88ยฐF, providing good warmth for Corn during the growing season.

Christian County, MO (Zone 6b) Moderate season
190 days
Last Spring Frost April 14
190 growing days
First Fall Frost October 21

Christian County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (73 days to spare)
Transplant: Apr 7 🍅 Harvest: Jun 9 – Aug 4
Recommended (50%) ✓ Fits season (71 days to spare)
Transplant: Apr 14 🍅 Harvest: Jun 16 – Aug 11
Safe Start (90%) ✓ Fits season (71 days to spare)
Transplant: Apr 29 🍅 Harvest: Jul 1 – Aug 26

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

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 413 gal / 100 sq ft
Corn needs ~1,280 GDD — county provides 3,040 GDD Excellent fit

Corn Planting Timeline โ€” Christian County, MO

Corn Planting Calendar

Activity When Date Range
Direct Sow April 21 Apr 21 โ€“ May 12
Harvest June 23 Jun 23 โ€“ Aug 18

Plant 1" deep ยท 12" apart ยท Rows 36" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May Direct Sow
June Harvest
July Harvest
August Harvest
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

60โ€“100 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 6b

Growing Season

190 days

Growing Tips for Christian 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

  • Tomatoes
  • Celery

Level Up Your Garden

Frequently Asked Questions

When should I plant Corn in Christian County, MO?

Christian County is in Zone 6b with an average last frost of April 14. Plan your Corn planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Christian County, MO?

Christian County, Missouri is in USDA Hardiness Zone 6b. The average last spring frost is April 14 and first fall frost is October 21.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Christian County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Christian County, MO. Local conditions may vary. Last updated: April 2026.