| City | Population | Last spring frost | First fall frost | Growing season | Zone |
|---|---|---|---|---|---|
| Columbus | 938,396 | Apr 20 | Oct 24 | 185 days | 6b |
| Cleveland | 363,608 | Apr 8 | Nov 12 | 217 days | 7a |
| Cincinnati | 314,367 | Apr 16 | Oct 25 | 190 days | 6b |
| Toledo | 263,423 | Apr 20 | Oct 27 | 188 days | 6b |
| Akron | 189,691 | Apr 24 | Oct 28 | 186 days | 6b |
| Dayton | 136,688 | Apr 18 | Oct 25 | 189 days | 6b |
| Parma | 78,581 | Apr 20 | Nov 3 | 198 days | 6b |
| Canton | 69,001 | Apr 24 | Oct 26 | 184 days | 6b |
| Lorain | 65,366 | Apr 24 | Oct 24 | 182 days | 6b |
| Hamilton | 64,644 | Apr 22 | Oct 18 | 178 days | 6b |
| Youngstown | 58,832 | May 1 | Oct 17 | 167 days | 6a |
| Springfield | 58,281 | Apr 25 | Oct 19 | 175 days | 6a |
| Kettering | 57,396 | Apr 18 | Oct 25 | 189 days | 6b |
| Elyria | 53,634 | Apr 22 | Nov 1 | 192 days | 6b |
| Middletown | 52,146 | Apr 24 | Oct 19 | 178 days | 6b |
| Newark | 51,473 | Apr 29 | Oct 16 | 167 days | 6a |
| Cuyahoga Falls | 50,975 | Apr 30 | Oct 21 | 173 days | 6b |
| Dublin | 49,094 | Apr 22 | Oct 23 | 183 days | 6b |
| Lakewood | 49,027 | Apr 20 | Nov 3 | 198 days | 7a |
| Beavercreek | 48,134 | Apr 18 | Oct 25 | 189 days | 6b |
| Euclid | 47,962 | Apr 8 | Nov 12 | 217 days | 7a |
| Mansfield | 47,381 | Apr 26 | Oct 22 | 177 days | 6a |
| Mentor | 47,010 | Apr 15 | Nov 9 | 209 days | 7a |
| Delaware | 46,636 | Apr 19 | Oct 26 | 188 days | 6b |
| Strongsville | 45,629 | Apr 20 | Nov 3 | 198 days | 6b |
| Grove City | 45,180 | Apr 23 | Oct 19 | 177 days | 6b |
| Fairfield | 44,682 | Apr 22 | Oct 18 | 178 days | 6b |
| Huber Heights | 43,905 | Apr 16 | Oct 28 | 194 days | 6b |
| Cleveland Heights | 43,750 | Apr 8 | Nov 12 | 217 days | 6b |
| Reynoldsburg | 43,350 | Apr 18 | Oct 27 | 191 days | 6b |
| Lancaster | 41,956 | Apr 22 | Oct 24 | 183 days | 6a |
| Findlay | 40,370 | Apr 22 | Oct 24 | 183 days | 6b |
| Hilliard | 38,898 | Apr 22 | Oct 23 | 183 days | 6b |
| Warren | 38,328 | May 8 | Oct 12 | 157 days | 6a |
| Westerville | 38,165 | Apr 22 | Oct 24 | 183 days | 6b |
| North Ridgeville | 37,786 | Apr 22 | Nov 1 | 192 days | 6b |
| Gahanna | 35,986 | Apr 18 | Oct 27 | 191 days | 6b |
| Upper Arlington | 35,893 | Apr 20 | Oct 24 | 185 days | 6b |
| Mason | 35,834 | Apr 22 | Oct 18 | 178 days | 6b |
| Fairborn | 35,754 | Apr 24 | Oct 17 | 173 days | 6b |
| Marion | 35,587 | Apr 25 | Oct 20 | 178 days | 6a |
| Brunswick | 35,114 | Apr 20 | Nov 3 | 198 days | 6b |
| Lima | 34,695 | Apr 24 | Oct 24 | 182 days | 6a |
| Stow | 33,941 | Apr 30 | Oct 21 | 173 days | 6b |
| Westlake | 33,904 | Apr 20 | Nov 3 | 198 days | 7a |
| Massillon | 32,168 | Apr 24 | Oct 26 | 184 days | 6b |
| North Olmsted | 31,542 | Apr 20 | Nov 3 | 198 days | 6b |
| Bowling Green | 31,182 | Apr 22 | Oct 25 | 186 days | 6b |
| North Royalton | 30,936 | Apr 20 | Nov 3 | 198 days | 6b |
| Marysville | 30,190 | Apr 19 | Oct 26 | 188 days | 6a |
| Garfield Heights | 28,790 | Apr 8 | Nov 12 | 217 days | 6b |
| Shaker Heights | 28,466 | Apr 8 | Nov 12 | 217 days | 6b |
| Kent | 27,737 | Apr 21 | Oct 29 | 189 days | 6a |
| Green | 27,553 | Apr 24 | Oct 26 | 184 days | 6b |
| Troy | 27,344 | Apr 18 | Oct 23 | 186 days | 6a |
| Wooster | 27,115 | Apr 30 | Oct 12 | 163 days | 6a |
| Avon Lake | 26,486 | Apr 22 | Nov 1 | 192 days | 7a |
| Xenia | 26,425 | Apr 18 | Oct 24 | 188 days | 6b |
| Pickerington | 26,333 | Apr 23 | Oct 19 | 177 days | 6b |
| Medina | 25,692 | Apr 29 | Oct 19 | 172 days | 6a |
| Avon | 25,611 | Apr 22 | Nov 1 | 192 days | 6b |
| Perrysburg | 25,441 | Apr 22 | Oct 24 | 188 days | 6b |
| Athens | 25,313 | Apr 25 | Oct 23 | 179 days | 6b |
| Centerville | 25,194 | Apr 17 | Oct 26 | 192 days | 6b |
| Zanesville | 25,138 | Apr 26 | Oct 19 | 177 days | 6b |
| Barberton | 24,748 | Apr 24 | Oct 28 | 186 days | 6b |
| Wadsworth | 24,720 | Apr 29 | Oct 19 | 172 days | 6b |
| Riverside | 24,706 | Apr 18 | Oct 25 | 189 days | 6b |
| Willoughby | 24,234 | Apr 26 | Oct 31 | 184 days | 7a |
| Sandusky | 24,001 | Apr 10 | Nov 5 | 209 days | 6b |
| Solon | 23,679 | Apr 8 | Nov 12 | 217 days | 6a |
| Trotwood | 23,190 | Apr 18 | Oct 25 | 189 days | 6b |
| Hudson | 23,085 | Apr 30 | Oct 21 | 173 days | 6b |
| Maple Heights | 22,902 | Apr 8 | Nov 12 | 217 days | 6b |
| Oxford | 22,387 | Apr 19 | Oct 22 | 186 days | 6a |
| Lebanon | 22,110 | Apr 24 | Oct 19 | 178 days | 6b |
| Chillicothe | 21,815 | Apr 20 | Oct 22 | 184 days | 6b |
| Alliance | 21,582 | Apr 24 | Oct 26 | 184 days | 6a |
| Rocky River | 21,397 | Apr 20 | Nov 3 | 198 days | 7a |
| South Euclid | 21,248 | Apr 8 | Nov 12 | 217 days | 6b |
| Piqua | 21,064 | Apr 18 | Oct 23 | 186 days | 6a |
| Painesville | 20,660 | Apr 15 | Nov 9 | 209 days | 7a |
| Miamisburg | 20,414 | Apr 17 | Oct 26 | 192 days | 6b |
| Parma Heights | 20,327 | Apr 20 | Nov 3 | 198 days | 6b |
| Sidney | 20,124 | Apr 27 | Oct 20 | 175 days | 6a |
| Forest Park | 20,041 | Apr 22 | Oct 18 | 178 days | 6b |
| Whitehall | 19,805 | Apr 18 | Oct 27 | 191 days | 6b |
| Broadview Heights | 19,755 | Apr 20 | Nov 3 | 198 days | 6a |
| Oregon | 19,674 | Apr 20 | Oct 27 | 188 days | 6b |
| Mayfield Heights | 19,667 | Apr 26 | Oct 31 | 184 days | 6a |
| Norwood | 19,658 | Apr 16 | Oct 25 | 190 days | 6b |
| Springboro | 19,606 | Apr 17 | Oct 26 | 192 days | 6b |
| Twinsburg | 18,939 | Apr 30 | Oct 21 | 173 days | 6a |
| Sylvania | 18,883 | Apr 22 | Oct 24 | 188 days | 6b |
| Ashland | 18,730 | Apr 30 | Oct 15 | 168 days | 6a |
| Pataskala | 18,529 | Apr 18 | Oct 27 | 191 days | 6a |
| Tallmadge | 18,521 | Apr 30 | Oct 21 | 173 days | 6b |
| Powell | 18,269 | Apr 22 | Oct 23 | 183 days | 6b |
| Brook Park | 18,195 | Apr 20 | Nov 3 | 198 days | 6b |
| Niles | 18,116 | May 8 | Oct 12 | 157 days | 6a |
| Aurora | 18,014 | Apr 21 | Oct 29 | 189 days | 6a |
| Steubenville | 17,922 | Apr 29 | Oct 20 | 175 days | 6b |
| Berea | 17,920 | Apr 20 | Nov 3 | 198 days | 6b |
| Tiffin | 17,803 | Apr 23 | Oct 23 | 184 days | 6a |
| Streetsboro | 17,730 | Apr 21 | Oct 29 | 189 days | 6a |
| North Canton | 17,692 | Apr 24 | Oct 26 | 184 days | 6b |
| Ashtabula | 17,474 | May 2 | Oct 21 | 171 days | 6b |
| New Philadelphia | 17,424 | Apr 30 | Oct 15 | 167 days | 6b |
| Eastlake | 17,357 | Apr 26 | Oct 31 | 184 days | 7a |
| Mount Vernon | 17,287 | May 1 | Oct 10 | 161 days | 6a |
| Portsmouth | 17,282 | Apr 17 | Oct 25 | 191 days | 7a |
| Norwalk | 17,191 | Apr 25 | Oct 25 | 183 days | 6a |
| Defiance | 17,009 | Apr 22 | Oct 24 | 183 days | 6a |
| Fairview Park | 16,748 | Apr 20 | Nov 3 | 198 days | 7a |
| Monroe | 15,880 | Apr 24 | Oct 19 | 178 days | 6b |
| Bay Village | 15,792 | Apr 20 | Nov 3 | 198 days | 7a |
| Fremont | 15,765 | Apr 26 | Oct 23 | 179 days | 6b |
| Middleburg Heights | 15,558 | Apr 20 | Nov 3 | 198 days | 6b |
| Vandalia | 15,014 | Apr 16 | Oct 28 | 194 days | 6b |
| Circleville | 14,634 | Apr 17 | Oct 28 | 192 days | 6b |
| Worthington | 14,543 | Apr 22 | Oct 23 | 183 days | 6b |
| Washington Court House | 14,375 | Apr 23 | Oct 21 | 181 days | 6b |
| Trenton | 14,241 | Apr 22 | Oct 18 | 178 days | 6b |
| Willowick | 14,178 | Apr 26 | Oct 31 | 184 days | 7a |
| Bellefontaine | 14,151 | Apr 26 | Oct 20 | 175 days | 6a |
| Sharonville | 13,997 | Apr 22 | Oct 18 | 178 days | 6b |
| New Franklin | 13,873 | Apr 24 | Oct 26 | 184 days | 6b |
| Brecksville | 13,843 | Apr 20 | Nov 3 | 198 days | 6b |
| Harrison | 13,795 | Apr 16 | Oct 28 | 193 days | 6b |
| Blue Ash | 13,707 | Apr 23 | Oct 18 | 177 days | 6b |
| Beachwood | 13,673 | Apr 8 | Nov 12 | 217 days | 6b |
| Lyndhurst | 13,522 | Apr 8 | Nov 12 | 217 days | 6a |
| Maumee | 13,521 | Apr 22 | Oct 24 | 188 days | 6b |
| Clayton | 13,397 | Apr 16 | Oct 28 | 194 days | 6a |
| Warrensville Heights | 13,353 | Apr 8 | Nov 12 | 217 days | 6b |
| Englewood | 13,343 | Apr 16 | Oct 28 | 194 days | 6a |
| Loveland | 13,288 | Apr 23 | Oct 18 | 177 days | 6b |
| East Cleveland | 13,229 | Apr 8 | Nov 12 | 217 days | 6b |
| University Heights | 13,200 | Apr 8 | Nov 12 | 217 days | 6b |
| Marietta | 13,053 | Apr 18 | Oct 27 | 191 days | 6b |
| Amherst | 12,974 | Apr 24 | Oct 24 | 182 days | 6b |
| West Carrollton | 12,963 | Apr 17 | Oct 26 | 192 days | 6b |
| Dover | 12,947 | Apr 30 | Oct 15 | 167 days | 6b |
| Fostoria | 12,920 | Apr 23 | Oct 23 | 184 days | 6b |
| Wilmington | 12,802 | Apr 17 | Oct 22 | 187 days | 6b |
| Bedford | 12,723 | Apr 8 | Nov 12 | 217 days | 6b |
| Greenville | 12,680 | Apr 21 | Oct 20 | 180 days | 6a |
| Wickliffe | 12,649 | Apr 26 | Oct 31 | 184 days | 6b |
| Bexley | 12,452 | Apr 18 | Oct 27 | 191 days | 6b |
| Conneaut | 12,247 | May 8 | Oct 16 | 160 days | 6b |
| Macedonia | 12,147 | Apr 30 | Oct 21 | 173 days | 6b |
| New Albany | 11,803 | Apr 18 | Oct 27 | 191 days | 6a |
| Salem | 11,655 | May 2 | Oct 13 | 165 days | 6a |
| Franklin | 11,647 | Apr 24 | Oct 19 | 178 days | 6b |
| Bucyrus | 11,631 | Apr 19 | Oct 27 | 190 days | 6a |
| Norton | 11,493 | Apr 24 | Oct 28 | 186 days | 6b |
| Seven Hills | 11,464 | Apr 8 | Nov 12 | 217 days | 6b |
| Van Wert | 11,200 | Apr 21 | Oct 26 | 187 days | 6a |
| Coshocton | 11,169 | Apr 27 | Oct 18 | 174 days | 6b |
| Urbana | 11,140 | Apr 24 | Oct 19 | 179 days | 6a |
| Ravenna | 11,136 | Apr 21 | Oct 29 | 189 days | 6a |
| Springdale | 11,134 | Apr 22 | Oct 18 | 178 days | 6b |
| Brooklyn | 11,072 | Apr 20 | Nov 3 | 198 days | 6b |
| Celina | 10,936 | Apr 27 | Oct 19 | 175 days | 6a |
| Montgomery | 10,922 | Apr 23 | Oct 18 | 177 days | 6b |
| Heath | 10,859 | Apr 22 | Oct 18 | 178 days | 6a |
| London | 10,813 | Apr 24 | Oct 18 | 175 days | 6a |
| Vermilion | 10,695 | Apr 24 | Oct 24 | 182 days | 6b |
| Bedford Heights | 10,691 | Apr 8 | Nov 12 | 217 days | 6b |
| Tipp City | 10,644 | Apr 16 | Oct 28 | 194 days | 6a |
| Reading | 10,491 | Apr 23 | Oct 18 | 177 days | 6b |
| Richmond Heights | 10,475 | Apr 8 | Nov 12 | 217 days | 7a |
| Galion | 10,370 | Apr 26 | Oct 20 | 176 days | 6a |
| Ironton | 10,148 | Apr 22 | Oct 23 | 181 days | 7a |
| Canal Winchester | 10,058 | Apr 23 | Oct 19 | 177 days | 6b |
| Cambridge | 10,055 | Apr 28 | Oct 17 | 172 days | 6b |
| Willoughby Hills | 9,992 | Apr 26 | Oct 31 | 184 days | 6b |
| Louisville | 9,874 | Apr 24 | Oct 26 | 184 days | 6b |
| Struthers | 9,837 | Apr 30 | Oct 23 | 175 days | 6a |
| Wapakoneta | 9,711 | Apr 24 | Oct 24 | 182 days | 6a |
| Madeira | 9,637 | Apr 23 | Oct 18 | 177 days | 6b |
| East Liverpool | 9,569 | Apr 22 | Oct 28 | 186 days | 6b |
| North College Hill | 9,544 | Apr 17 | Oct 26 | 191 days | 6b |
| Oakwood | 9,441 | Apr 18 | Oct 25 | 189 days | 6b |
| Girard | 9,384 | May 1 | Oct 17 | 167 days | 6a |
| Shelby | 9,231 | Apr 30 | Oct 15 | 167 days | 6a |
| Grandview Heights | 9,112 | Apr 20 | Oct 24 | 185 days | 6b |
| Sheffield Lake | 8,971 | Apr 22 | Nov 1 | 192 days | 7a |
| Sunbury | 8,857 | Apr 22 | Oct 24 | 183 days | 6a |
| Wyoming | 8,807 | Apr 17 | Oct 26 | 191 days | 6b |
| Napoleon | 8,680 | Apr 24 | Oct 21 | 179 days | 6a |
| Olmsted Falls | 8,669 | Apr 20 | Nov 3 | 198 days | 6b |
| Cheviot | 8,623 | Apr 17 | Oct 26 | 191 days | 6b |
| Oberlin | 8,603 | Apr 27 | Oct 22 | 178 days | 6b |
| Bryan | 8,579 | Apr 26 | Oct 17 | 170 days | 6a |
| Highland Heights | 8,559 | Apr 26 | Oct 31 | 184 days | 6b |
| Orrville | 8,461 | Apr 29 | Oct 14 | 167 days | 6a |
| St. Marys | 8,398 | Apr 27 | Oct 19 | 175 days | 6a |
| Eaton | 8,327 | Apr 25 | Oct 20 | 176 days | 6a |
| Bellevue | 8,154 | Apr 25 | Oct 25 | 183 days | 6a |
| Fairlawn | 7,815 | Apr 30 | Oct 21 | 173 days | 6b |
| Kenton | 7,808 | Apr 22 | Oct 24 | 182 days | 6a |
| Campbell | 7,721 | Apr 30 | Oct 23 | 175 days | 6a |
| Canfield | 7,584 | May 8 | Oct 12 | 157 days | 6a |
| Bellbrook | 7,563 | Apr 17 | Oct 26 | 192 days | 6b |
| Hubbard | 7,528 | May 1 | Oct 17 | 167 days | 6a |
| Independence | 7,456 | Apr 8 | Nov 12 | 217 days | 6b |
| Wauseon | 7,430 | Apr 29 | Oct 16 | 170 days | 6a |
| Obetz | 7,342 | Apr 23 | Oct 19 | 177 days | 6b |
| Union | 7,177 | Apr 16 | Oct 28 | 194 days | 6a |
| Logan | 7,164 | Apr 30 | Oct 14 | 167 days | 6b |
| Mentor-on-the-Lake | 7,120 | Apr 15 | Nov 9 | 209 days | 7a |
| Delphos | 7,096 | Apr 21 | Oct 26 | 187 days | 6a |
| Cortland | 7,024 | Apr 30 | Oct 23 | 176 days | 6a |
| South Lebanon | 6,965 | Apr 23 | Oct 18 | 177 days | 6b |
| Kirtland | 6,925 | Apr 26 | Oct 31 | 184 days | 6b |
| Mount Healthy | 6,917 | Apr 17 | Oct 26 | 191 days | 6b |
| Pepper Pike | 6,886 | Apr 8 | Nov 12 | 217 days | 6a |
| Hillsboro | 6,763 | Apr 24 | Oct 20 | 178 days | 6b |
| Columbiana | 6,756 | May 2 | Oct 13 | 165 days | 6a |
| Ontario | 6,692 | Apr 30 | Oct 15 | 167 days | 6a |
| Upper Sandusky | 6,661 | Apr 29 | Oct 17 | 171 days | 6a |
| Belpre | 6,657 | Apr 14 | Oct 30 | 197 days | 6b |
| Moraine | 6,627 | Apr 18 | Oct 25 | 189 days | 6b |
| Huron | 6,585 | Apr 10 | Nov 5 | 209 days | 6b |
| Milford | 6,436 | Apr 23 | Oct 18 | 177 days | 6b |
| Rossford | 6,369 | Apr 20 | Oct 27 | 188 days | 6b |
| Clyde | 6,361 | Apr 26 | Oct 23 | 179 days | 6b |
| Granville | 6,252 | Apr 22 | Oct 18 | 178 days | 6a |
| Jackson | 6,233 | Apr 22 | Oct 21 | 181 days | 6b |
| Willard | 6,130 | Apr 25 | Oct 25 | 183 days | 6a |
| Rittman | 6,120 | Apr 29 | Oct 14 | 167 days | 6a |
| The Village of Indian Hill | 6,114 | Apr 23 | Oct 18 | 177 days | 6b |
| Martins Ferry | 6,048 | Apr 20 | Oct 29 | 192 days | 6b |
| Waterville | 6,037 | Apr 22 | Oct 24 | 188 days | 6b |
| Brookville | 5,999 | Apr 16 | Oct 28 | 194 days | 6a |
| Germantown | 5,947 | Apr 24 | Oct 19 | 178 days | 6b |
| Carlisle | 5,885 | Apr 24 | Oct 19 | 178 days | 6b |
| Port Clinton | 5,875 | Apr 10 | Nov 5 | 209 days | 6b |
| West Jefferson | 5,827 | Apr 24 | Oct 18 | 175 days | 6b |
| Groveport | 5,818 | Apr 23 | Oct 19 | 177 days | 6b |
| Geneva | 5,806 | May 2 | Oct 21 | 171 days | 6b |
| Grafton | 5,764 | Apr 22 | Nov 1 | 192 days | 6b |
| Deer Park | 5,557 | Apr 23 | Oct 18 | 177 days | 6b |
| New Carlisle | 5,525 | Apr 24 | Oct 17 | 173 days | 6a |
| Wellston | 5,488 | Apr 22 | Oct 21 | 181 days | 6b |
| Johnstown | 5,476 | Apr 27 | Oct 17 | 172 days | 6a |
| Canal Fulton | 5,412 | Apr 24 | Oct 26 | 184 days | 6b |
| Reminderville | 5,336 | Apr 30 | Oct 21 | 173 days | 6a |
| Northwood | 5,252 | Apr 20 | Oct 27 | 188 days | 6b |
| Chardon | 5,251 | May 5 | Oct 18 | 164 days | 6a |
| Toronto | 5,149 | Apr 22 | Oct 28 | 186 days | 6b |
| Uhrichsville | 5,145 | Apr 29 | Oct 15 | 170 days | 6b |
| Whitehouse | 5,073 | Apr 22 | Oct 24 | 188 days | 6b |