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When to Plant Corn in Atlantic County, NJ

Atlantic County, New Jersey Zone 7a May

Top priorities for Atlantic County, New Jersey gardeners in May

Your Atlantic County, New Jersey garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost April 5
Avg. first frost November 12
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 14.2 hrs
Looking ahead to June
  • 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.

Atlantic County, New Jersey is in USDA Zone 7a. The average last spring frost is April 5 and the first fall frost is November 12, giving you a growing season of approximately 221 days.

At an elevation of 232 feet, Atlantic County receives approximately 49.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Corn during the growing season.

Atlantic County, NJ (Zone 7a) Long season
221 days
Last Spring Frost April 5
221 growing days
First Fall Frost November 12
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Atlantic County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (103 days to spare)
Transplant: Mar 24 🍅 Harvest: May 26 – Jul 21
Recommended (50%) ✓ Fits season (102 days to spare)
Transplant: Apr 5 🍅 Harvest: Jun 7 – Aug 2
Safe Start (90%) ✓ Fits season (102 days to spare)
Transplant: Apr 28 🍅 Harvest: Jun 30 – Aug 25

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 Atlantic County

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

Soil pH

Your soil pH (5.2–6.2) is more acidic than Corn prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Corn.

Organic Matter

Organic matter is moderate (3.9%). Annual compost additions will help Corn.

How to Plant Corn

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

Succession Planting Corn

4
successive plantings in your 221-day season

Sow every 6.9 weeks. Last sowing by Aug 04 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 215 gal / 100 sq ft

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 4" 0" ❄️ Dormant
Feb 3.6" 0" ❄️ Dormant
Mar 4.2" 0" ❄️ Dormant
Apr 6.5" 4.6" 1.9" 💧 Light watering
May 6.5" 4.6" 1.9" 💧 Light watering
Jun 6.5" 4" 2.5" 💧 Light watering
Jul 6.5" 5.3" 1.2" 💧 Light watering
Aug 6.5" 3.9" 2.6" 💧 Light watering
Sep 6.5" 4.6" 1.9" 💧 Light watering
Oct 6.5" 3.6" 2.9" 💧 Light watering
Nov 6.5" 3.2" 3.3" 🚿 Regular watering
Dec 3.9" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Atlantic 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 ~1,460 GDD — county provides 4,033 GDD Excellent fit

Corn Planting Timeline — Atlantic County, NJ

Corn Planting Calendar

Activity When Date Range
Direct Sow April 12 Apr 12 – May 3
Harvest June 14 Jun 14 – Aug 9

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 · Only during dry spells

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7a

📆 Growing Season

221 days in Atlantic County

Growing Tips for Corn in Atlantic County

Direct sow Corn outdoors after April 05 in Atlantic County when soil has warmed and frost danger has passed.

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 Atlantic County, NJ?

Atlantic County is in Zone 7a with an average last frost of April 5. Plan your Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is Atlantic County, NJ?

Atlantic County, New Jersey is in USDA Hardiness Zone 7a. The average last spring frost is April 5 and first fall frost is November 12.

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Your Atlantic County Garden Planner — Free

A 24-page printable planner built for Atlantic County (Zone 7a). 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 Atlantic County, NJ. 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.