When to plant Onions in Ohio
In spring, from Mar 1 – Apr 1 in Beachwood to Apr 10 – May 1 in Warren.
In fall, Sept 1 – Oct 15.
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 |
|---|---|---|
| Akron | Mar 15 – Apr 10 | Not listed |
| Alliance | Mar 15 – Apr 10 | Not listed |
| Amherst | Mar 15 – Apr 10 | Spring-planted |
| Ashland | Apr 1 – May 1 | Spring-planted |
| Ashtabula | Apr 1 – May 1 | Spring-planted |
| Athens | Mar 15 – Apr 10 | Spring-planted |
| Aurora | Mar 15 – Apr 10 | Not listed |
| Avon | Mar 15 – Apr 10 | Not listed |
| Avon Lake | Mar 15 – Apr 10 | Not listed |
| Barberton | Mar 15 – Apr 10 | Not listed |
| Bay Village | Mar 15 – Apr 10 | Not listed |
| Beachwood | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Beavercreek | Mar 15 – Apr 10 | Spring-planted |
| Bedford | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Bedford Heights | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Bellefontaine | Apr 1 – May 1 | Spring-planted |
| Berea | Mar 15 – Apr 10 | Not listed |
| Bexley | Mar 15 – Apr 10 | Not listed |
| Blue Ash | Mar 15 – Apr 10 | Spring-planted |
| Bowling Green | Mar 15 – Apr 10 | Spring-planted |
| Brecksville | Mar 15 – Apr 10 | Not listed |
| Broadview Heights | Mar 15 – Apr 10 | Not listed |
| Brook Park | Mar 15 – Apr 10 | Not listed |
| Brooklyn | Mar 15 – Apr 10 | Not listed |
| Brunswick | Mar 15 – Apr 10 | Not listed |
| Bucyrus | Mar 15 – Apr 10 | Not listed |
| Cambridge | Apr 1 – May 1 | Spring-planted |
| Canal Winchester | Mar 15 – Apr 10 | Spring-planted |
| Canton | Mar 15 – Apr 10 | Not listed |
| Celina | Apr 1 – May 1 | Spring-planted |
| Centerville | Mar 15 – Apr 10 | Not listed |
| Chillicothe | Mar 15 – Apr 10 | Spring-planted |
| Cincinnati | Mar 15 – Apr 10 | Spring-planted |
| Circleville | Mar 15 – Apr 10 | Not listed |
| Clayton | Mar 15 – Apr 10 | Not listed |
| Cleveland | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Cleveland Heights | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Columbus | Mar 15 – Apr 10 | Spring-planted |
| Conneaut | Apr 10 – May 1 | Spring-planted |
| Coshocton | Apr 1 – May 1 | Spring-planted |
| Cuyahoga Falls | Apr 1 – May 1 | Spring-planted |
| Dayton | Mar 15 – Apr 10 | Spring-planted |
| Defiance | Mar 15 – Apr 10 | Spring-planted |
| Delaware | Mar 15 – Apr 10 | Not listed |
| Dover | Apr 1 – May 1 | Spring-planted |
| Dublin | Mar 15 – Apr 10 | Spring-planted |
| East Cleveland | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Eastlake | Apr 1 – May 1 | Not listed |
| Elyria | Mar 15 – Apr 10 | Not listed |
| Englewood | Mar 15 – Apr 10 | Not listed |
| Euclid | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Fairborn | Mar 15 – Apr 10 | Spring-planted |
| Fairfield | Mar 15 – Apr 10 | Spring-planted |
| Fairview Park | Mar 15 – Apr 10 | Not listed |
| Findlay | Mar 15 – Apr 10 | Spring-planted |
| Forest Park | Mar 15 – Apr 10 | Spring-planted |
| Fostoria | Mar 15 – Apr 10 | Spring-planted |
| Franklin | Mar 15 – Apr 10 | Spring-planted |
| Fremont | Apr 1 – May 1 | Spring-planted |
| Gahanna | Mar 15 – Apr 10 | Not listed |
| Galion | Apr 1 – May 1 | Spring-planted |
| Garfield Heights | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Green | Mar 15 – Apr 10 | Not listed |
| Greenville | Mar 15 – Apr 10 | Spring-planted |
| Grove City | Mar 15 – Apr 10 | Spring-planted |
| Hamilton | Mar 15 – Apr 10 | Spring-planted |
| Harrison | Mar 15 – Apr 10 | Not listed |
| Heath | Mar 15 – Apr 10 | Spring-planted |
| Hilliard | Mar 15 – Apr 10 | Spring-planted |
| Huber Heights | Mar 15 – Apr 10 | Not listed |
| Hudson | Apr 1 – May 1 | Spring-planted |
| Ironton | Mar 15 – Apr 10 | Spring-planted |
| Kent | Mar 15 – Apr 10 | Not listed |
| Kettering | Mar 15 – Apr 10 | Spring-planted |
| Lakewood | Mar 15 – Apr 10 | Not listed |
| Lancaster | Mar 15 – Apr 10 | Spring-planted |
| Lebanon | Mar 15 – Apr 10 | Spring-planted |
| Lima | Mar 15 – Apr 10 | Spring-planted |
| London | Mar 15 – Apr 10 | Spring-planted |
| Lorain | Mar 15 – Apr 10 | Spring-planted |
| Loveland | Mar 15 – Apr 10 | Spring-planted |
| Lyndhurst | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Macedonia | Apr 1 – May 1 | Spring-planted |
| Mansfield | Apr 1 – May 1 | Spring-planted |
| Maple Heights | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Marietta | Mar 15 – Apr 10 | Not listed |
| Marion | Mar 15 – Apr 10 | Spring-planted |
| Marysville | Mar 15 – Apr 10 | Not listed |
| Mason | Mar 15 – Apr 10 | Spring-planted |
| Massillon | Mar 15 – Apr 10 | Not listed |
| Maumee | Mar 15 – Apr 10 | Spring-planted |
| Mayfield Heights | Apr 1 – May 1 | Not listed |
| Medina | Apr 1 – May 1 | Spring-planted |
| Mentor | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Miamisburg | Mar 15 – Apr 10 | Not listed |
| Middleburg Heights | Mar 15 – Apr 10 | Not listed |
| Middletown | Mar 15 – Apr 10 | Spring-planted |
| Monroe | Mar 15 – Apr 10 | Spring-planted |
| Montgomery | Mar 15 – Apr 10 | Spring-planted |
| Mount Vernon | Apr 1 – May 1 | Spring-planted |
| New Albany | Mar 15 – Apr 10 | Not listed |
| New Franklin | Mar 15 – Apr 10 | Not listed |
| New Philadelphia | Apr 1 – May 1 | Spring-planted |
| Newark | Apr 1 – May 1 | Spring-planted |
| Niles | Apr 10 – May 1 | Spring-planted |
| North Canton | Mar 15 – Apr 10 | Not listed |
| North Olmsted | Mar 15 – Apr 10 | Not listed |
| North Ridgeville | Mar 15 – Apr 10 | Not listed |
| North Royalton | Mar 15 – Apr 10 | Not listed |
| Norton | Mar 15 – Apr 10 | Not listed |
| Norwalk | Mar 15 – Apr 10 | Spring-planted |
| Norwood | Mar 15 – Apr 10 | Spring-planted |
| Oregon | Mar 15 – Apr 10 | Not listed |
| Oxford | Mar 15 – Apr 10 | Spring-planted |
| Painesville | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Parma | Mar 15 – Apr 10 | Not listed |
| Parma Heights | Mar 15 – Apr 10 | Not listed |
| Pataskala | Mar 15 – Apr 10 | Not listed |
| Perrysburg | Mar 15 – Apr 10 | Spring-planted |
| Pickerington | Mar 15 – Apr 10 | Spring-planted |
| Piqua | Mar 15 – Apr 10 | Spring-planted |
| Portsmouth | Mar 15 – Apr 10 | Spring-planted |
| Powell | Mar 15 – Apr 10 | Spring-planted |
| Ravenna | Mar 15 – Apr 10 | Not listed |
| Reading | Mar 15 – Apr 10 | Spring-planted |
| Reynoldsburg | Mar 15 – Apr 10 | Not listed |
| Richmond Heights | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Riverside | Mar 15 – Apr 10 | Spring-planted |
| Rocky River | Mar 15 – Apr 10 | Not listed |
| Salem | Apr 1 – May 1 | Spring-planted |
| Sandusky | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Seven Hills | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Shaker Heights | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Sharonville | Mar 15 – Apr 10 | Spring-planted |
| Sidney | Apr 1 – May 1 | Spring-planted |
| Solon | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| South Euclid | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Springboro | Mar 15 – Apr 10 | Not listed |
| Springdale | Mar 15 – Apr 10 | Spring-planted |
| Springfield | Mar 15 – Apr 10 | Spring-planted |
| Steubenville | Apr 1 – May 1 | Spring-planted |
| Stow | Apr 1 – May 1 | Spring-planted |
| Streetsboro | Mar 15 – Apr 10 | Not listed |
| Strongsville | Mar 15 – Apr 10 | Not listed |
| Sylvania | Mar 15 – Apr 10 | Spring-planted |
| Tallmadge | Apr 1 – May 1 | Spring-planted |
| Tiffin | Mar 15 – Apr 10 | Spring-planted |
| Tipp City | Mar 15 – Apr 10 | Not listed |
| Toledo | Mar 15 – Apr 10 | Not listed |
| Trenton | Mar 15 – Apr 10 | Spring-planted |
| Trotwood | Mar 15 – Apr 10 | Spring-planted |
| Troy | Mar 15 – Apr 10 | Spring-planted |
| Twinsburg | Apr 1 – May 1 | Spring-planted |
| University Heights | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Upper Arlington | Mar 15 – Apr 10 | Spring-planted |
| Urbana | Mar 15 – Apr 10 | Spring-planted |
| Van Wert | Mar 15 – Apr 10 | Not listed |
| Vandalia | Mar 15 – Apr 10 | Not listed |
| Vermilion | Mar 15 – Apr 10 | Spring-planted |
| Wadsworth | Apr 1 – May 1 | Spring-planted |
| Warren | Apr 10 – May 1 | Spring-planted |
| Warrensville Heights | Mar 1 – Apr 1 | Sept 1 – Oct 15 |
| Washington Court House | Mar 15 – Apr 10 | Spring-planted |
| West Carrollton | Mar 15 – Apr 10 | Not listed |
| Westerville | Mar 15 – Apr 10 | Spring-planted |
| Westlake | Mar 15 – Apr 10 | Not listed |
| Whitehall | Mar 15 – Apr 10 | Not listed |
| Wickliffe | Apr 1 – May 1 | Not listed |
| Willoughby | Apr 1 – May 1 | Not listed |
| Willowick | Apr 1 – May 1 | Not listed |
| Wilmington | Mar 15 – Apr 10 | Spring-planted |
| Wooster | Apr 1 – May 1 | Spring-planted |
| Worthington | Mar 15 – Apr 10 | Spring-planted |
| Xenia | Mar 15 – Apr 10 | Spring-planted |
| Youngstown | Apr 1 – May 1 | Spring-planted |
| Zanesville | Apr 1 – May 1 | Spring-planted |
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.