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When to Plant Corn in Charlotte County, FL

Charlotte County, Florida Zone 10a May

What to do in May

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Charlotte County, Florida.

Avg. last frost January 29
Soil temp (4") 82°F
Watering Low
Pest pressure High
Daylight 13.3 hrs
  1. Basket week: corn

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Coming up in June — start thinking about
  • First harvests: corn

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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.

Charlotte County, Florida is in USDA Zone 10a. The average last spring frost is January 29 and the first fall frost is April 15, giving you a growing season of approximately 76 days.

At an elevation of 487 feet, Charlotte County receives approximately 59.2 inches of rainfall annually with predominantly sand soil. Summer highs average 86°F, providing good warmth for Corn during the growing season. Sandy soil warms quickly in spring — great for early planting — but Corn will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Corn root diseases.

Charlotte County, FL (Zone 10a) Very short season
76 days
Last Spring Frost January 29
76 growing days
First Fall Frost April 15

Charlotte County Soil Profile

Soil Type

Sand

Soil pH

5-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (150 days to spare)
Transplant: Jan 19 🍅 Harvest: Mar 23 – May 18
Recommended (50%) ✓ Fits season (140 days to spare)
Transplant: Jan 29 🍅 Harvest: Apr 2 – May 28
Safe Start (90%) ✓ Fits season (108 days to spare)
Transplant: Mar 2 🍅 Harvest: May 4 – Jun 29

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 Corn's growing requirements.

Soil pH

Your soil pH (5.0–5.8) is more acidic than Corn prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Charlotte County warms quickly in spring but drains fast. Corn will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Corn.

Organic Matter

Organic matter is low (1.5%). Add 2-3 inches of compost before planting Corn.

How to Plant Corn

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

How Much Corn to Grow

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

For a family of 4, plant approximately 60 corn plants in about 180 sq ft. In Charlotte County's 76-day season, you'll have plenty of time for a full harvest. Plan your garden layout →

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.7″/week
You supply
1.5″/week
Watering frequency 2-3 times/week
Season total 4,946 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Corn

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 Corn Needs Rainfall You Supplement Action
Jan 6.5" 2.8" 3.7" 🚿 Regular watering
Feb 6.5" 3.5" 3" 💧 Light watering
Mar 6.5" 3.6" 2.9" 💧 Light watering
Apr 6.5" 2.8" 3.7" 🚿 Regular watering
May 6.5" 4.5" 2" 💧 Light watering
Jun 6.5" 7.4" 0" ✅ Rainfall sufficient
Jul 6.5" 10" 0" ✅ Rainfall sufficient
Aug 6.5" 8.5" 0" ✅ Rainfall sufficient
Sep 6.5" 6.9" 0" ✅ Rainfall sufficient
Oct 6.5" 4.6" 1.9" 💧 Light watering
Nov 2.3" 0" ❄️ Dormant
Dec 2.3" 0" ❄️ Dormant

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

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.

Corn needs ~1,160 GDD — county provides 5,292 GDD Excellent fit

Corn Planting Timeline — Charlotte County, FL

Corn Planting Calendar

Activity When Date Range
Direct Sow February 5 Feb 5 – Feb 26
Harvest April 9 Apr 9 – Jun 4

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 2-3 times/week

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 10a

📆 Growing Season

76 days in Charlotte County

Growing Tips for Corn in Charlotte County

Direct sow Corn outdoors after January 29 in Charlotte County when soil has warmed and frost danger has passed.

Sandy soil in Charlotte County dries quickly — mulch Corn with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Common pests for 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 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 Charlotte County, FL?

Charlotte County is in Zone 10a with an average last frost of January 29. Plan your Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is Charlotte County, FL?

Charlotte County, Florida is in USDA Hardiness Zone 10a. The average last spring frost is January 29 and first fall frost is .

🌱

Your Charlotte County Garden Planner — Free

A 24-page printable planner built for Charlotte County (Zone 10a). 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, FL. Local conditions may vary. Last updated: May 2026.

Sources & credits

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