When to Plant Tomatoes in Cortland County, NY
Tomatoes are the most popular home garden crop, available in thousands of varieties from tiny cherries to massive beefsteaks. They are warm-season plants needing full sun.
Cortland County, New York is in USDA Zone 5a. The average last spring frost is May 11 and the first fall frost is October 11, giving you a growing season of approximately 153 days.
At an elevation of 729 feet, Cortland County receives approximately 44.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Tomatoes during the growing season.
Cortland County Soil Profile
Soil Type
Silt Loam
Soil pH
5-6.5
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
Tomatoes Planting Timeline — Cortland County, NY
Tomatoes Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 16 | Mar 16 – Mar 30 |
| Transplant Outdoors | May 25 | May 25 – Jun 8 |
| Direct Sow | May 18 | May 18 – Jun 8 |
| Harvest | July 27 | Jul 27 – Oct 5 |
Plant 0.5" deep · 24" apart · Rows 36" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | — |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
60–85 days
Soil pH
6 – 7
USDA Zone
Zone 5a
Growing Season
153 days
Growing Tips for Cortland County
Start seeds indoors 6-8 weeks before last frost. Bury transplants deep to encourage rooting along the stem. Provide consistent moisture to prevent blossom end rot and cracking.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Isolate 25 ft between varieties for purity. Use open-pollinated varieties for true-to-type seeds.
Tomatoes in Other Locations
Frequently Asked Questions
When should I plant Tomatoes in Cortland County, NY?
Cortland County is in Zone 5a with an average last frost of May 11. Plan your Tomatoes planting based on this frost date — see the calendar above for exact timing.
What planting zone is Cortland County, NY?
Cortland County, New York is in USDA Hardiness Zone 5a. The average last spring frost is May 11 and first fall frost is October 11.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Cortland County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
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