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When to Plant Corn in Scioto County, OH

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.

Scioto County, Ohio is in USDA Zone 6a. The average last spring frost is April 22 and the first fall frost is October 21, giving you a growing season of approximately 182 days.

At an elevation of 851 feet, Scioto County receives approximately 38.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Corn during the growing season.

Scioto County, OH (Zone 6a) Moderate season
182 days
Last Spring Frost April 22
182 growing days
First Fall Frost October 21

Scioto County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (68 days to spare)
Transplant: Apr 13 🍅 Harvest: Jun 15 – Aug 10
Recommended (50%) ✓ Fits season (63 days to spare)
Transplant: Apr 22 🍅 Harvest: Jun 24 – Aug 19
Safe Start (90%) ✓ Fits season (58 days to spare)
Transplant: May 9 🍅 Harvest: Jul 11 – Sep 5

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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 169 gal / 100 sq ft
Corn needs ~1,220 GDD — county provides 2,775 GDD Excellent fit

Corn Planting Timeline โ€” Scioto County, OH

Corn Planting Calendar

Activity When Date Range
Direct Sow April 29 Apr 29 โ€“ May 20
Harvest July 1 Jul 1 โ€“ Aug 26

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 โ€”
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 6a

Growing Season

182 days

Growing Tips for Scioto 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 Scioto County, OH?

Scioto County is in Zone 6a with an average last frost of April 22. Plan your Corn planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Scioto County, OH?

Scioto County, Ohio is in USDA Hardiness Zone 6a. The average last spring frost is April 22 and first fall frost is October 21.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Scioto County gardeners in Zone 6a 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 Scioto County, OH. Local conditions may vary. Last updated: April 2026.