When To Plant Corn In Georgia

Corn in Georgia performs best when planted in mid-April after soil has warmed to at least 60°F. Knowing exactly when to plant corn in georgia can make the difference between a bumper crop and a disappointing harvest. The state’s diverse climate means timing varies by region, but getting it right is simpler than you think.

Georgia’s long growing season is a huge advantage for corn growers. You can plant early enough to avoid summer drought stress but late enough to skip late frosts. The key is watching your soil temperature, not just the calendar.

The best time to plant corn in Georgia is between late March and early May, depending on where you live. South Georgia can start as early as mid-March, while north Georgia often waits until late April. Soil temperature is your most reliable guide.

Soil Temperature Requirements

Corn seeds need soil at least 60°F to germinate well. Colder soil leads to rot and poor emergence. Use a soil thermometer placed 2 inches deep in the morning.

Minimum temperature: 50°F (but germination is slow)
Ideal range: 60°F to 85°F
Optimal: 65°F to 75°F for fastest growth
Too hot: Above 95°F can damage seeds

Check your soil temp three days in a row before planting. If it stays above 60°F, you are good to go.

Regional Planting Windows

Georgia’s climate zones affect planting dates significantly. Here is a breakdown by region.

South Georgia (Below Macon)

Plant from late March to mid-April. Soils warm faster here. Many farmers start around March 20.

Central Georgia (Macon to Atlanta)

Target early to mid-April. Soil temps usually hit 60°F by April 10.

North Georgia (Above Atlanta)

Wait until mid-April to early May. Higher elevation means cooler soil. May 1 is common.

Coastal Areas

Plant from late March to early April. Ocean breezes moderate temps, but watch for late cold snaps.

Factors That Affect Corn Planting Timing

Several things influence when you should put seeds in the ground. Ignoring them can ruin your crop.

Frost Dates

Corn is very sensitive to frost. A late freeze kills young plants. Know your area’s last frost date.

South Georgia: Last frost around March 15
Central Georgia: Last frost around April 1
North Georgia: Last frost around April 15

Plant two weeks after your last frost date for safety. This gives soil time to warm.

Rainfall Patterns

Corn needs consistent moisture during pollination. In Georgia, July is often dry. Planting in April means corn pollinates in June, avoiding drought.

If you plant too late, your corn pollinates during July heat. This reduces yield. Early planting helps you catch spring rains.

Corn Variety

Different corn types have different maturity times. Sweet corn matures faster than field corn.

Early sweet corn: 60-70 days
Mid-season sweet corn: 70-85 days
Late sweet corn: 85-100 days
Field corn: 100-130 days

Choose varieties that match your planting window. If you plant late, use a shorter-season corn.

Step-By-Step Guide To Planting Corn In Georgia

Follow these steps for the best results. Each step matters.

Test your soil – Get a soil test from your county extension office. Corn needs pH between 6.0 and 6.8.
Prepare the bed – Till soil to 6-8 inches deep. Remove weeds and rocks.
Warm the soil – Use black plastic mulch if you want to plant earlier. It raises soil temp by 5-10°F.
Check temperature – Use a soil thermometer at 2 inches depth. Wait for 60°F.
Plant seeds – Sow seeds 1-1.5 inches deep. Space them 8-12 inches apart in rows 30-36 inches apart.
Water well – Give seeds 1-2 inches of water after planting. Keep soil moist until germination.
Thin seedlings – When plants are 4 inches tall, thin to one plant every 12 inches.

Plant corn in blocks of at least 4 rows for good pollination. Single rows often produce poor ears.

Common Mistakes When Planting Corn In Georgia

Avoid these errors to protect your harvest.

Planting too early in cold soil – Seeds rot instead of sprouting
Planting too late – Heat stress reduces yield
Not spacing correctly – Crowded plants produce small ears
Ignoring soil pH – Corn needs proper nutrients
Planting in wet soil – Seeds can drown or rot

Many gardeners plant corn when they see others planting. But your soil might be different. Always check your own conditions.

Succession Planting For Continuous Harvest

You can plant corn every two weeks for a longer harvest. This works well in Georgia’s long season.

First planting: Mid-April
Second planting: Early May
Third planting: Late May
Fourth planting: Mid-June

Stop planting by July 1. Later plantings may not mature before fall frost in north Georgia. In south Georgia, you can plant into July.

Corn Growth Stages And Temperature

Understanding growth stages helps you time planting better.

Germination (0-10 Days)

Seeds need 60°F soil. At 50°F, germination takes 20+ days. At 70°F, it takes 5-7 days.

Vegetative Growth (10-50 Days)

Corn grows fast in warm weather. Ideal temps are 70-85°F. Cold snaps slow growth.

Pollination (50-70 Days)

This is the most critical stage. Temperatures above 95°F can kill pollen. Plant so pollination happens before July heat.

Grain Fill (70-100 Days)

Corn needs moderate temps and moisture. Hot, dry weather reduces kernel size.

Tools To Help You Decide When To Plant

Use these resources for accurate timing.

Soil thermometer – Cheap and essential
Georgia Weather Network – Real-time soil temp data
County extension office – Local planting guides
Frost date maps – Know your last frost

Your local extension agent can give you specific advice for your county. They know microclimates.

Corn Planting Calendar For Georgia

Here is a simple calendar based on average conditions.

Region	Earliest	Optimal	Latest
South Georgia	March 15	April 1	May 15
Central Georgia	March 25	April 10	May 20
North Georgia	April 1	April 20	June 1
Coastal	March 20	April 5	May 10

These dates are averages. Adjust based on your actual soil temperature.

Preparing Your Soil For Corn

Good soil prep improves germination and growth.

Soil Testing

Test soil pH and nutrients. Corn needs nitrogen, phosphorus, and potassium. Apply lime if pH is below 6.0.

Adding Fertilizer

Apply 10-10-10 fertilizer at planting. Side-dress with nitrogen when corn is 12 inches tall.

At planting: 300 lbs per acre of 10-10-10
Side-dress: 100 lbs nitrogen per acre
Organic option: Composted manure at 2 inches deep

Tilling

Till soil when it is dry enough to crumble. Wet soil forms clods that block seed growth.

Watering Corn In Georgia

Corn needs about 1 inch of water per week. During pollination, it needs more.

Germination: Keep soil moist but not soggy
Vegetative growth: 1 inch per week
Pollination: 1.5 inches per week
Grain fill: 1 inch per week

Use drip irrigation or soaker hoses to avoid wetting leaves. Wet leaves promote disease.

Pests And Diseases To Watch For

Planting at the right time helps avoid some problems.

Common Pests

Corn earworm – More common in late plantings
Cutworms – Active in cool soil
Armyworms – Can appear any time

Common Diseases

Seed rot – Caused by cold, wet soil
Southern corn leaf blight – Worse in humid weather
Smut – More common in stressed plants

Planting when soil is warm and dry reduces seed rot. Early planting avoids some pests.

Harvesting Corn In Georgia

Sweet corn is ready about 20 days after silks appear. Field corn is ready when kernels are hard.

Check kernels: They should be plump and milky
Silks: Brown and dry
Ear feel: Firm and full

Harvest in the morning for sweetest flavor. Corn converts sugar to starch quickly after picking.

Frequently Asked Questions

Can I Plant Corn In Georgia In June?

Yes, but only in south Georgia. Use short-season varieties. June planting risks heat stress during pollination.

What Is The Latest I Can Plant Corn In Georgia?

For north Georgia, June 1 is the latest. For south Georgia, July 1 works for early varieties. Later plantings may not mature before frost.

Should I Soak Corn Seeds Before Planting?

No. Soaking can cause seeds to rot in the ground. Plant dry seeds directly into warm soil.

How Deep Should I Plant Corn In Georgia?

Plant 1-1.5 inches deep. In sandy soil, go 2 inches deep. In clay soil, 1 inch is enough.

Do I Need To Fertilize Corn When Planting?

Yes. Corn is a heavy feeder. Apply a balanced fertilizer at planting time. Side-dress with nitrogen later.

Final Tips For Planting Corn In Georgia

Georgia’s climate is ideal for corn if you time it right. Start with a soil test, watch your soil temperature, and plant in blocks for good pollination.

Remember that microclimates exist. Your neighbor’s planting date might not work for you. Check your own soil temp and frost dates.

With proper timing, you can enjoy fresh sweet corn from June through September. Field corn planted in April will be ready by August.

Corn is rewarding to grow. Get the timing right, and you will have a great harvest.