When to Plant Corn in Suffolk County, NY
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.
Suffolk County, New York is in USDA Zone 7a. The average last spring frost is April 15 and the first fall frost is October 31, giving you a growing season of approximately 199 days.
At an elevation of 1,187 feet, Suffolk County receives approximately 41 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Corn during the growing season.
Suffolk County Soil Profile
Soil Type
Silt Loam
Soil pH
4.9-6.7
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
Corn Planting Timeline — Suffolk County, NY
Corn Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 22 | Apr 22 – May 13 |
| Harvest | June 24 | Jun 24 – Aug 19 |
Plant 1" deep · 12" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
60–100 days
Soil pH
6 – 7
USDA Zone
Zone 7a
Growing Season
199 days
Growing Tips for Suffolk County
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
Level Up Your Garden
Corn in Other Locations
Frequently Asked Questions
When should I plant Corn in Suffolk County, NY?
Suffolk County is in Zone 7a with an average last frost of April 15. Plan your Corn planting based on this frost date — see the calendar above for exact timing.
What planting zone is Suffolk County, NY?
Suffolk County, New York is in USDA Hardiness Zone 7a. The average last spring frost is April 15 and first fall frost is October 31.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Suffolk County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.
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