When to Plant Sweet Corn in Cumberland County, NJ
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.
Cumberland County, New Jersey is in USDA Zone 7a. The average last spring frost is March 28 and the first fall frost is November 12, giving you a growing season of approximately 229 days.
At an elevation of 425 feet, Cumberland County receives approximately 42 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94°F, providing good warmth for Sweet Corn during the growing season.
Cumberland County Soil Profile
Soil Type
Silt Loam
Soil pH
5.2-6.8
Drainage
Well Drained
Plant Planting Risk Windows
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.
Plant Water Budget
Sweet Corn Planting Timeline — Cumberland County, NJ
Sweet Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 4 | Apr 4 – Apr 25 |
| Harvest | June 6 | Jun 6 – Jul 18 |
Plant 1" deep · 12" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
60–90 days
Soil pH
6 – 7
USDA Zone
Zone 7a
Growing Season
229 days
Growing Tips for Cumberland County
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
Level Up Your Garden
Sweet Corn in Other Locations
Frequently Asked Questions
When should I plant Sweet Corn in Cumberland County, NJ?
Cumberland County is in Zone 7a with an average last frost of March 28. Plan your Sweet Corn planting based on this frost date — see the calendar above for exact timing.
What planting zone is Cumberland County, NJ?
Cumberland County, New Jersey is in USDA Hardiness Zone 7a. The average last spring frost is March 28 and first fall frost is November 12.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Cumberland County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.
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