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When to Plant Sweet Corn in Charlotte County, VA

Charlotte County, Virginia Zone 7b April

April to-do list for Charlotte County, Virginia

Your Charlotte County, Virginia garden is entering a new phase. Here's what's on the schedule for April and why each task matters now.

Avg. last frost April 18
Avg. first frost October 22
Soil temp (4") 58°F
Watering Moderate
Pest pressure Moderate
Daylight 13 hrs
  1. Outdoor sowing time: sweet corn

    Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.

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Sweet corn is bred for high sugar content in its kernels, which convert to starch rapidly after harvest. Modern supersweet varieties hold their sweetness longer.

Charlotte County, Virginia is in USDA Zone 7b. The average last spring frost is April 18 and the first fall frost is October 22, giving you a growing season of approximately 187 days.

At an elevation of 407 feet, Charlotte County receives approximately 44.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Sweet Corn during the growing season.

Charlotte County, VA (Zone 7b) Moderate season
187 days
Last Spring Frost April 18
187 growing days
First Fall Frost October 22
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Charlotte County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (86 days to spare)
Transplant: Apr 10 🍅 Harvest: Jun 12 – Jul 24
Recommended (50%) ✓ Fits season (82 days to spare)
Transplant: Apr 18 🍅 Harvest: Jun 20 – Aug 1
Safe Start (90%) ✓ Fits season (76 days to spare)
Transplant: May 9 🍅 Harvest: Jul 11 – Aug 22

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.

Soil Compatibility in Charlotte County

How your county's soil matches Sweet Corn's growing requirements.

Soil pH

Your soil pH (5.3–6.5) is more acidic than Sweet Corn prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Charlotte County is excellent for Sweet Corn — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.0%). Annual compost additions will help Sweet Corn.

How to Plant Sweet Corn

1"
Planting Depth
12"
Between Plants
36"
Between Rows

Succession Planting Sweet Corn

3
successive plantings in your 187-day season

Sow every 6.9 weeks. Last sowing by Jul 24 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.0″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 833 gal / 100 sq ft

Monthly Watering Guide for Sweet Corn

Sweet Corn needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Sweet Corn Needs Rainfall You Supplement Action
Jan 3.4" 0" ❄️ Dormant
Feb 3.3" 0" ❄️ Dormant
Mar 3.8" 0" ❄️ Dormant
Apr 6.5" 3.5" 3" 💧 Light watering
May 6.5" 3.7" 2.8" 💧 Light watering
Jun 6.5" 3.9" 2.6" 💧 Light watering
Jul 6.5" 4.9" 1.6" 💧 Light watering
Aug 6.5" 4.8" 1.7" 💧 Light watering
Sep 6.5" 3.3" 3.2" 💧 Light watering
Oct 6.5" 2.9" 3.6" 🚿 Regular watering
Nov 3" 0" ❄️ Dormant
Dec 3.9" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Charlotte County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Sweet Corn Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Sweet Corn needs ~1,256 GDD — county provides 3,132 GDD Excellent fit

Sweet Corn Planting Timeline — Charlotte County, VA

Sweet Corn Planting Calendar

Activity When Date Range
Direct Sow April 25 Apr 25 – May 16
Harvest June 27 Jun 27 – Aug 8

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7b

📆 Growing Season

187 days in Charlotte County

Growing Tips for Sweet Corn in Charlotte County

Direct sow Sweet Corn outdoors after April 18 in Charlotte County when soil has warmed and frost danger has passed.

Common pests for Sweet Corn in this region include corn earworm and corn borers. Use row covers early in the season and inspect plants weekly.

General growing tips

Plant in blocks of at least 4 rows for wind pollination. Direct sow after soil is warm. Isolate supersweet varieties from other corn types to prevent cross-pollination.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sweet Corn in Charlotte County, VA?

Charlotte County is in Zone 7b with an average last frost of April 18. Plan your Sweet Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is Charlotte County, VA?

Charlotte County, Virginia is in USDA Hardiness Zone 7b. The average last spring frost is April 18 and first fall frost is October 22.

🌱

Your Charlotte County Garden Planner — Free

A 24-page printable planner built for Charlotte County (Zone 7b). 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 Charlotte County, VA. Local conditions may vary. Last updated: April 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.