New York Frost Dates & Growing Season Guide
New York (NY) spans USDA hardiness zones 5b, 6a, 7b, with growing seasons ranging from 160 days in Syracuse to 224 days in New York City. The average growing season across the state is approximately 177 days.
New York City Frost Dates
The table below shows the average last spring frost date, first fall frost date, growing season length, and USDA hardiness zone for each city. Click a city name for detailed planting calendars and zone information.
| City | Last Spring Frost | First Fall Frost | Growing Season | Zone | Min Temp |
|---|---|---|---|---|---|
| New York City | April 1 | November 11 | 224 days | 7b | 5°F |
| Albany | April 27 | October 10 | 166 days | 5b | -15°F |
| Buffalo | April 30 | October 15 | 168 days | 6a | -10°F |
| Syracuse | May 1 | October 8 | 160 days | 5b | -15°F |
| Rochester | April 28 | October 12 | 167 days | 6a | -10°F |
Planting Windows for New York
Based on average frost dates, here are the recommended planting windows for each city. The indoor seed start date is approximately seven weeks before the last spring frost. Transplanting should occur about two weeks after the last frost. The last direct sow date for fall crops is ten weeks before the first fall frost.
| City | Start Seeds Indoors | Transplant After | Last Direct Sow |
|---|---|---|---|
| New York City | February 12 | April 15 | September 2 |
| Albany | March 9 | May 11 | August 1 |
| Buffalo | March 12 | May 14 | August 6 |
| Syracuse | March 13 | May 15 | July 30 |
| Rochester | March 10 | May 12 | August 3 |
Gardening in New York
New York State encompasses remarkably varied growing conditions, from New York City's zone 7b urban heat island to the Adirondack zone 3b extremes. The Hudson Valley and Long Island have the longest seasons, while upstate cities like Syracuse and Buffalo see frost well into May. New York City rooftop and community gardens thrive in the moderated urban climate with over 220 frost-free days. Upstate, the lake effect from Lakes Erie and Ontario delays fall frost near the shore but brings heavy cloud cover. Apple growing is excellent throughout the state. Cool-season vegetables perform superbly in the temperate summers of central and western New York, and warm-season crops ripen reliably in the southern tier and Hudson Valley.
Understanding New York's Hardiness Zones
New York includes USDA hardiness zones 5b, 6a, 7b. These zones indicate the average annual extreme minimum winter temperature for each area, which determines which perennial plants, trees, and shrubs can survive winter without protection. When purchasing trees, shrubs, or perennial flowers, always check that the plant is rated for your hardiness zone or a lower (colder) zone number.
Tips for Using New York Frost Dates
These frost dates represent long-term averages and should be treated as guidelines rather than guarantees. In any given year, the actual last spring frost or first fall frost may arrive one to three weeks earlier or later than the average. Factors that affect your specific location include elevation above the city center, proximity to water, slope direction, and whether you are in an urban or rural area. South-facing slopes and areas near large pavement or building masses tend to be warmer than surrounding open land. Low-lying valleys and exposed hilltops are often colder than mid-slope positions.
To protect against late spring frosts, keep row cover fabric, old bed sheets, or frost blankets on hand. Monitor your local weather forecast daily as the average frost date approaches. When frost is predicted after you have transplanted, covering plants in the late afternoon traps ground heat and can protect against temperatures down to about 28 degrees Fahrenheit. For fall season extension, the same covers protect mature plants from early frosts, often buying several additional weeks of harvest.