When to plant Onions in New York
In spring, from Feb 15 – Mar 15 in Floral Park to Apr 20 – May 15 in Oneonta.
In fall, from Sept 1 – Oct 15 in Babylon to Oct 1 – Dec 31 in New York.
Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Airmont | Mar 15 – Apr 10 | Spring-planted |
| Albany | Apr 1 – May 1 | Spring-planted |
| Amsterdam | Apr 10 – May 1 | Spring-planted |
| Auburn | Apr 1 – May 1 | Spring-planted |
| Babylon | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Batavia | Apr 1 – May 1 | Spring-planted |
| Beacon | Mar 1 – Apr 1 | Not listed |
| Binghamton | Apr 1 – May 1 | Spring-planted |
| Buffalo | Mar 15 – Apr 10 | Not listed |
| Canandaigua | Apr 1 – May 1 | Spring-planted |
| Chestnut Ridge | Mar 15 – Apr 10 | Not listed |
| Cohoes | Mar 15 – Apr 10 | Not listed |
| Corning | Apr 20 – May 15 | Spring-planted |
| Cortland | Apr 10 – May 1 | Spring-planted |
| Depew | Mar 15 – Apr 10 | Not listed |
| Dobbs Ferry | Mar 15 – Apr 10 | Not listed |
| Dunkirk | Apr 1 – May 1 | Spring-planted |
| East Rockaway | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Elmira | Apr 10 – May 1 | Spring-planted |
| Endicott | Apr 1 – May 1 | Spring-planted |
| Floral Park | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Freeport | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Fulton | Apr 1 – May 1 | Spring-planted |
| Garden City | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Geneva | Apr 1 – May 1 | Spring-planted |
| Glen Cove | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Glens Falls | Apr 20 – May 15 | Spring-planted |
| Gloversville | Apr 10 – May 1 | Spring-planted |
| Great Neck | Feb 15 – Mar 15 | Oct 1 – Dec 31Now |
| Harrison | Mar 1 – Apr 1 | Not listed |
| Haverstraw | Mar 15 – Apr 10 | Spring-planted |
| Hempstead | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Ithaca | Apr 10 – May 1 | Spring-planted |
| Jamestown | Apr 10 – May 1 | Spring-planted |
| Johnson City | Apr 1 – May 1 | Spring-planted |
| Kenmore | Apr 10 – May 1 | Spring-planted |
| Kingston | Apr 10 – May 1 | Spring-planted |
| Kiryas Joel | Mar 1 – Apr 1 | Not listed |
| Lackawanna | Mar 15 – Apr 10 | Not listed |
| Lake Grove | Mar 1 – Apr 1 | Not listed |
| Lancaster | Mar 15 – Apr 10 | Not listed |
| Lindenhurst | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Lockport | Apr 1 – May 1 | Not listed |
| Long Beach | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Lynbrook | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Mamaroneck | Mar 15 – Apr 10 | Not listed |
| Massapequa Park | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Middletown | Mar 15 – Apr 10 | Spring-planted |
| Mineola | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Mount Kisco | Mar 15 – Apr 10 | Spring-planted |
| Mount Vernon | Feb 15 – Mar 15 | Oct 1 – Dec 31Now |
| New Hyde Park | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| New Rochelle | Mar 15 – Apr 10 | Not listed |
| New York | Feb 15 – Mar 15 | Oct 1 – Dec 31Now |
| Newburgh | Apr 1 – May 1 | Spring-planted |
| Niagara Falls | Apr 1 – May 1 | Spring-planted |
| North Tonawanda | Apr 10 – May 1 | Spring-planted |
| Olean | Apr 10 – May 1 | Spring-planted |
| Oneida | Apr 1 – May 1 | Spring-planted |
| Oneonta | Apr 20 – May 15 | Spring-planted |
| Ossining | Mar 15 – Apr 10 | Spring-planted |
| Oswego | Mar 15 – Apr 10 | Not listed |
| Patchogue | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Peekskill | Apr 1 – May 1 | Spring-planted |
| Plattsburgh | Apr 10 – May 1 | Spring-planted |
| Port Chester | Mar 1 – Apr 1 | Not listed |
| Poughkeepsie | Mar 15 – Apr 10 | Spring-planted |
| Rochester | Mar 15 – Apr 10 | Spring-planted |
| Rockville Centre | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Rome | Apr 10 – May 1 | Spring-planted |
| Rye | Mar 1 – Apr 1 | Not listed |
| Saratoga Springs | Apr 1 – May 1 | Spring-planted |
| Scarsdale | Mar 15 – Apr 10 | Not listed |
| Schenectady | Apr 1 – May 1 | Spring-planted |
| Sleepy Hollow | Mar 15 – Apr 10 | Not listed |
| Spring Valley | Mar 15 – Apr 10 | Not listed |
| Suffern | Mar 15 – Apr 10 | Spring-planted |
| Syracuse | Apr 1 – May 1 | Spring-planted |
| Tarrytown | Mar 15 – Apr 10 | Not listed |
| Tonawanda | Apr 10 – May 1 | Spring-planted |
| Troy | Mar 15 – Apr 10 | Not listed |
| Utica | Apr 1 – May 1 | Spring-planted |
| Valley Stream | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Watertown | Apr 1 – May 1 | Spring-planted |
| Watervliet | Mar 15 – Apr 10 | Not listed |
| West Haverstraw | Mar 15 – Apr 10 | Spring-planted |
| Westbury | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| White Plains | Mar 1 – Apr 1 | Not listed |
| Woodbury | Mar 1 – Apr 1 | Not listed |
| Yonkers | Mar 15 – Apr 10 | Not listed |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for onion plants.