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When to plant Corn in Windham County, CT

In Windham County, plant Corn in spring between May 6 and May 27, once soil temps hold above 50°F. Windham County's last frost averages April 29, so time plantings around the expected last-frost window for best survival. For a fall crop, sow between and — roughly 60–100 days before the first frost on October 16.

When to Plant Corn in Windham County, CT

Corn

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.

Windham County, Connecticut is in USDA Zone 6a. The average last spring frost is April 29 and the first fall frost is October 16, giving you a growing season of approximately 170 days.

At an elevation of 110 feet, Windham County receives approximately 41.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Corn during the growing season.

Windham County, CT (Zone 6a) Moderate season
170 days
Last Spring Frost April 29
170 growing days
First Fall Frost October 16

Windham County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

How Much Corn to Grow

1-2 ears
Average yield per plant
15
Plants per person
30 sq ft
Space per person

For a family of 4, plant approximately 60 corn plants in about 120 sq ft. In Windham County's 170-day season, you'll have plenty of time for a full harvest. Plan your garden layout →

Corn Planting Timeline — Windham County, CT

Corn Planting Calendar

Activity When Date Range
Direct Sow May 6 May 6 – May 27
Harvest July 8 Jul 8 – Sep 2

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 6a

📆 Growing Season

170 days in Windham County

Growing Tips for Windham 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Corn in Windham County, CT?

Windham County is in Zone 6a with an average last frost of April 29. Plan your Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is Windham County, CT?

Windham County, Connecticut is in USDA Hardiness Zone 6a. The average last spring frost is April 29 and first fall frost is October 16.

When should I plant Corn in Windham County, CT?

In Windham County, CT, plant Corn after the last frost (around April 29) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Windham County, CT for Corn?

Windham County sits in USDA Zone 6a. Corn grows reliably in zones 3a through 11b, so it's a good fit here.

Can Corn grow in Windham County's climate?

Yes — Corn grows well in Windham County's temperate climate. Windham County averages a 170-day frost-free season, with last frost around April 29 and first frost around October 16.

🌱

Your Windham County Garden Planner — Free

A 22-page printable planner built for Windham County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Windham County, CT. Local conditions may vary. Last updated: July 2026.

Sources & credits

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