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When to Plant Corn in Lake County, TN

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.

Lake County, Tennessee is in USDA Zone 7a. The average last spring frost is March 30 and the first fall frost is October 31, giving you a growing season of approximately 215 days.

At an elevation of 3,977 feet, Lake County receives approximately 46.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89ยฐF, providing good warmth for Corn during the growing season.

Lake County, TN (Zone 7a) Long season
215 days
Last Spring Frost March 30
215 growing days
First Fall Frost October 31

Lake County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (98 days to spare)
Transplant: Mar 22 🍅 Harvest: May 24 – Jul 19
Recommended (50%) ✓ Fits season (96 days to spare)
Transplant: Mar 30 🍅 Harvest: Jun 1 – Jul 27
Safe Start (90%) ✓ Fits season (101 days to spare)
Transplant: Apr 16 🍅 Harvest: Jun 18 – Aug 13

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 172 gal / 100 sq ft
Corn needs ~1,340 GDD — county provides 3,601 GDD Excellent fit

Corn Planting Timeline โ€” Lake County, TN

Corn Planting Calendar

Activity When Date Range
Direct Sow April 6 Apr 6 โ€“ Apr 27
Harvest June 8 Jun 8 โ€“ Aug 3

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 โ€”
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 7a

Growing Season

215 days

Growing Tips for Lake 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 Lake County, TN?

Lake County is in Zone 7a with an average last frost of March 30. Plan your Corn planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Lake County, TN?

Lake County, Tennessee is in USDA Hardiness Zone 7a. The average last spring frost is March 30 and first fall frost is October 31.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Lake County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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Free download. Plan your entire garden season in minutes.

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