When to plant Summer squash (zucchini) in Ohio
In spring, from Apr 20 – June 1 in Beachwood to May 10 – June 10 in Warren.
In fall, June 1 – Aug 1.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Akron | May 1 – June 15 | June 1 – Aug 1 |
| Alliance | May 1 – June 15 | June 1 – Aug 1 |
| Amherst | May 1 – June 15 | June 1 – July 20 |
| Ashland | May 1 – 30 | June 1 – July 15 |
| Ashtabula | May 1 – 30 | June 1 – July 20 |
| Athens | May 1 – June 15 | June 1 – July 20 |
| Aurora | May 1 – June 15 | June 1 – Aug 1 |
| Avon | May 1 – June 15 | June 1 – Aug 1 |
| Avon Lake | May 1 – June 15 | June 1 – Aug 1 |
| Barberton | May 1 – June 15 | June 1 – Aug 1 |
| Bay Village | May 1 – June 15 | June 1 – Aug 1 |
| Beachwood | Apr 20 – June 1 | June 1 – Aug 10 |
| Beavercreek | May 1 – June 15 | June 1 – July 20 |
| Bedford | Apr 20 – June 1 | June 1 – Aug 10 |
| Bedford Heights | Apr 20 – June 1 | June 1 – Aug 10 |
| Bellefontaine | May 1 – 30 | June 1 – July 20 |
| Berea | May 1 – June 15 | June 1 – Aug 1 |
| Bexley | May 1 – June 15 | June 1 – Aug 1 |
| Blue Ash | May 1 – June 15 | June 1 – July 20 |
| Bowling Green | May 1 – June 15 | June 1 – July 20 |
| Brecksville | May 1 – June 15 | June 1 – Aug 1 |
| Broadview Heights | May 1 – June 15 | June 1 – Aug 1 |
| Brook Park | May 1 – June 15 | June 1 – Aug 1 |
| Brooklyn | May 1 – June 15 | June 1 – Aug 1 |
| Brunswick | May 1 – June 15 | June 1 – Aug 1 |
| Bucyrus | May 1 – June 15 | June 1 – Aug 1 |
| Cambridge | May 1 – 30 | June 1 – July 20 |
| Canal Winchester | May 1 – June 15 | June 1 – July 20 |
| Canton | May 1 – June 15 | June 1 – Aug 1 |
| Celina | May 1 – 30 | June 1 – July 20 |
| Centerville | May 1 – June 15 | June 1 – Aug 1 |
| Chillicothe | May 1 – June 15 | June 1 – July 20 |
| Cincinnati | May 1 – June 15 | June 1 – July 20 |
| Circleville | May 1 – June 15 | June 1 – Aug 1 |
| Clayton | May 1 – June 15 | June 1 – Aug 1 |
| Cleveland | Apr 20 – June 1 | June 1 – Aug 10 |
| Cleveland Heights | Apr 20 – June 1 | June 1 – Aug 10 |
| Columbus | May 1 – June 15 | June 1 – July 20 |
| Conneaut | May 10 – June 10 | June 1 – July 20 |
| Coshocton | May 1 – 30 | June 1 – July 20 |
| Cuyahoga Falls | May 1 – 30 | June 1 – July 20 |
| Dayton | May 1 – June 15 | June 1 – July 20 |
| Defiance | May 1 – June 15 | June 1 – July 20 |
| Delaware | May 1 – June 15 | June 1 – Aug 1 |
| Dover | May 1 – 30 | June 1 – July 15 |
| Dublin | May 1 – June 15 | June 1 – July 20 |
| East Cleveland | Apr 20 – June 1 | June 1 – Aug 10 |
| Eastlake | May 1 – 30 | June 1 – Aug 1 |
| Elyria | May 1 – June 15 | June 1 – Aug 1 |
| Englewood | May 1 – June 15 | June 1 – Aug 1 |
| Euclid | Apr 20 – June 1 | June 1 – Aug 10 |
| Fairborn | May 1 – June 15 | June 1 – July 20 |
| Fairfield | May 1 – June 15 | June 1 – July 20 |
| Fairview Park | May 1 – June 15 | June 1 – Aug 1 |
| Findlay | May 1 – June 15 | June 1 – July 20 |
| Forest Park | May 1 – June 15 | June 1 – July 20 |
| Fostoria | May 1 – June 15 | June 1 – July 20 |
| Franklin | May 1 – June 15 | June 1 – July 20 |
| Fremont | May 1 – 30 | June 1 – July 20 |
| Gahanna | May 1 – June 15 | June 1 – Aug 1 |
| Galion | May 1 – 30 | June 1 – July 20 |
| Garfield Heights | Apr 20 – June 1 | June 1 – Aug 10 |
| Green | May 1 – June 15 | June 1 – Aug 1 |
| Greenville | May 1 – June 15 | June 1 – July 20 |
| Grove City | May 1 – June 15 | June 1 – July 20 |
| Hamilton | May 1 – June 15 | June 1 – July 20 |
| Harrison | May 1 – June 15 | June 1 – Aug 1 |
| Heath | May 1 – June 15 | June 1 – July 20 |
| Hilliard | May 1 – June 15 | June 1 – July 20 |
| Huber Heights | May 1 – June 15 | June 1 – Aug 1 |
| Hudson | May 1 – 30 | June 1 – July 20 |
| Ironton | May 1 – June 15 | June 1 – July 20 |
| Kent | May 1 – June 15 | June 1 – Aug 1 |
| Kettering | May 1 – June 15 | June 1 – July 20 |
| Lakewood | May 1 – June 15 | June 1 – Aug 1 |
| Lancaster | May 1 – June 15 | June 1 – July 20 |
| Lebanon | May 1 – June 15 | June 1 – July 20 |
| Lima | May 1 – June 15 | June 1 – July 20 |
| London | May 1 – June 15 | June 1 – July 20 |
| Lorain | May 1 – June 15 | June 1 – July 20 |
| Loveland | May 1 – June 15 | June 1 – July 20 |
| Lyndhurst | Apr 20 – June 1 | June 1 – Aug 10 |
| Macedonia | May 1 – 30 | June 1 – July 20 |
| Mansfield | May 1 – 30 | June 1 – July 20 |
| Maple Heights | Apr 20 – June 1 | June 1 – Aug 10 |
| Marietta | May 1 – June 15 | June 1 – Aug 1 |
| Marion | May 1 – June 15 | June 1 – July 20 |
| Marysville | May 1 – June 15 | June 1 – Aug 1 |
| Mason | May 1 – June 15 | June 1 – July 20 |
| Massillon | May 1 – June 15 | June 1 – Aug 1 |
| Maumee | May 1 – June 15 | June 1 – July 20 |
| Mayfield Heights | May 1 – 30 | June 1 – Aug 1 |
| Medina | May 1 – 30 | June 1 – July 20 |
| Mentor | Apr 20 – June 1 | June 1 – Aug 10 |
| Miamisburg | May 1 – June 15 | June 1 – Aug 1 |
| Middleburg Heights | May 1 – June 15 | June 1 – Aug 1 |
| Middletown | May 1 – June 15 | June 1 – July 20 |
| Monroe | May 1 – June 15 | June 1 – July 20 |
| Montgomery | May 1 – June 15 | June 1 – July 20 |
| Mount Vernon | May 1 – 30 | June 1 – July 15 |
| New Albany | May 1 – June 15 | June 1 – Aug 1 |
| New Franklin | May 1 – June 15 | June 1 – Aug 1 |
| New Philadelphia | May 1 – 30 | June 1 – July 15 |
| Newark | May 1 – 30 | June 1 – July 20 |
| Niles | May 10 – June 10 | June 1 – July 15 |
| North Canton | May 1 – June 15 | June 1 – Aug 1 |
| North Olmsted | May 1 – June 15 | June 1 – Aug 1 |
| North Ridgeville | May 1 – June 15 | June 1 – Aug 1 |
| North Royalton | May 1 – June 15 | June 1 – Aug 1 |
| Norton | May 1 – June 15 | June 1 – Aug 1 |
| Norwalk | May 1 – June 15 | June 1 – July 20 |
| Norwood | May 1 – June 15 | June 1 – July 20 |
| Oregon | May 1 – June 15 | June 1 – Aug 1 |
| Oxford | May 1 – June 15 | June 1 – July 20 |
| Painesville | Apr 20 – June 1 | June 1 – Aug 10 |
| Parma | May 1 – June 15 | June 1 – Aug 1 |
| Parma Heights | May 1 – June 15 | June 1 – Aug 1 |
| Pataskala | May 1 – June 15 | June 1 – Aug 1 |
| Perrysburg | May 1 – June 15 | June 1 – July 20 |
| Pickerington | May 1 – June 15 | June 1 – July 20 |
| Piqua | May 1 – June 15 | June 1 – July 20 |
| Portsmouth | May 1 – June 15 | June 1 – July 20 |
| Powell | May 1 – June 15 | June 1 – July 20 |
| Ravenna | May 1 – June 15 | June 1 – Aug 1 |
| Reading | May 1 – June 15 | June 1 – July 20 |
| Reynoldsburg | May 1 – June 15 | June 1 – Aug 1 |
| Richmond Heights | Apr 20 – June 1 | June 1 – Aug 10 |
| Riverside | May 1 – June 15 | June 1 – July 20 |
| Rocky River | May 1 – June 15 | June 1 – Aug 1 |
| Salem | May 1 – 30 | June 1 – July 15 |
| Sandusky | Apr 20 – June 1 | June 1 – Aug 10 |
| Seven Hills | Apr 20 – June 1 | June 1 – Aug 10 |
| Shaker Heights | Apr 20 – June 1 | June 1 – Aug 10 |
| Sharonville | May 1 – June 15 | June 1 – July 20 |
| Sidney | May 1 – 30 | June 1 – July 20 |
| Solon | Apr 20 – June 1 | June 1 – Aug 10 |
| South Euclid | Apr 20 – June 1 | June 1 – Aug 10 |
| Springboro | May 1 – June 15 | June 1 – Aug 1 |
| Springdale | May 1 – June 15 | June 1 – July 20 |
| Springfield | May 1 – June 15 | June 1 – July 20 |
| Steubenville | May 1 – 30 | June 1 – July 20 |
| Stow | May 1 – 30 | June 1 – July 20 |
| Streetsboro | May 1 – June 15 | June 1 – Aug 1 |
| Strongsville | May 1 – June 15 | June 1 – Aug 1 |
| Sylvania | May 1 – June 15 | June 1 – July 20 |
| Tallmadge | May 1 – 30 | June 1 – July 20 |
| Tiffin | May 1 – June 15 | June 1 – July 20 |
| Tipp City | May 1 – June 15 | June 1 – Aug 1 |
| Toledo | May 1 – June 15 | June 1 – Aug 1 |
| Trenton | May 1 – June 15 | June 1 – July 20 |
| Trotwood | May 1 – June 15 | June 1 – July 20 |
| Troy | May 1 – June 15 | June 1 – July 20 |
| Twinsburg | May 1 – 30 | June 1 – July 20 |
| University Heights | Apr 20 – June 1 | June 1 – Aug 10 |
| Upper Arlington | May 1 – June 15 | June 1 – July 20 |
| Urbana | May 1 – June 15 | June 1 – July 20 |
| Van Wert | May 1 – June 15 | June 1 – Aug 1 |
| Vandalia | May 1 – June 15 | June 1 – Aug 1 |
| Vermilion | May 1 – June 15 | June 1 – July 20 |
| Wadsworth | May 1 – 30 | June 1 – July 20 |
| Warren | May 10 – June 10 | June 1 – July 15 |
| Warrensville Heights | Apr 20 – June 1 | June 1 – Aug 10 |
| Washington Court House | May 1 – June 15 | June 1 – July 20 |
| West Carrollton | May 1 – June 15 | June 1 – Aug 1 |
| Westerville | May 1 – June 15 | June 1 – July 20 |
| Westlake | May 1 – June 15 | June 1 – Aug 1 |
| Whitehall | May 1 – June 15 | June 1 – Aug 1 |
| Wickliffe | May 1 – 30 | June 1 – Aug 1 |
| Willoughby | May 1 – 30 | June 1 – Aug 1 |
| Willowick | May 1 – 30 | June 1 – Aug 1 |
| Wilmington | May 1 – June 15 | June 1 – July 20 |
| Wooster | May 1 – 30 | June 1 – July 15 |
| Worthington | May 1 – June 15 | June 1 – July 20 |
| Xenia | May 1 – June 15 | June 1 – July 20 |
| Youngstown | May 1 – 30 | June 1 – July 20 |
| Zanesville | May 1 – 30 | June 1 – July 20 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. The full USDA table for summer squash.