When to plant Summer squash (zucchini) in Missouri
In spring, from Apr 10 – June 1 in Ballwin to May 1 – June 15 in West Plains.
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 |
|---|---|---|
| Arnold | Apr 20 – June 1 | June 1 – Aug 1 |
| Ballwin | Apr 10 – June 1 | June 1 – Aug 1 |
| Bellefontaine Neighbors | Apr 10 – June 1 | June 1 – Aug 1 |
| Belton | Apr 20 – June 1 | June 1 – Aug 1 |
| Blue Springs | Apr 20 – June 1 | June 1 – Aug 1 |
| Bolivar | Apr 20 – June 1 | June 1 – July 20 |
| Branson | Apr 20 – June 1 | June 1 – Aug 1 |
| Bridgeton | Apr 10 – June 1 | June 1 – Aug 1 |
| Cape Girardeau | Apr 20 – June 1 | June 1 – July 20 |
| Carthage | Apr 10 – June 1 | June 1 – Aug 1 |
| Chesterfield | Apr 10 – June 1 | June 1 – Aug 1 |
| Clayton | Apr 10 – June 1 | June 1 – Aug 1 |
| Columbia | Apr 20 – June 1 | June 1 – Aug 1 |
| Crestwood | Apr 10 – June 1 | June 1 – Aug 1 |
| Creve Coeur | Apr 10 – June 1 | June 1 – Aug 1 |
| Dardenne Prairie | Apr 20 – June 1 | June 1 – Aug 1 |
| Ellisville | Apr 20 – June 1 | June 1 – July 20 |
| Eureka | Apr 20 – June 1 | June 1 – July 20 |
| Excelsior Springs | May 1 – June 15 | June 1 – July 20 |
| Farmington | Apr 20 – June 1 | June 1 – July 20 |
| Ferguson | Apr 10 – June 1 | June 1 – Aug 1 |
| Festus | Apr 20 – June 1 | June 1 – Aug 1 |
| Florissant | Apr 10 – June 1 | June 1 – Aug 1 |
| Fulton | Apr 20 – June 1 | June 1 – July 20 |
| Gladstone | Apr 10 – June 1 | June 1 – Aug 1 |
| Grain Valley | Apr 20 – June 1 | June 1 – Aug 1 |
| Grandview | Apr 20 – June 1 | June 1 – Aug 1 |
| Hannibal | Apr 20 – June 1 | June 1 – Aug 1 |
| Hazelwood | Apr 10 – June 1 | June 1 – Aug 1 |
| Independence | Apr 20 – June 1 | June 1 – Aug 1 |
| Jackson | Apr 20 – June 1 | June 1 – Aug 1 |
| Jefferson City | Apr 20 – June 1 | June 1 – Aug 1 |
| Jennings | Apr 10 – June 1 | June 1 – Aug 1 |
| Joplin | Apr 20 – June 1 | June 1 – Aug 1 |
| Kansas City | Apr 10 – June 1 | June 1 – Aug 1 |
| Kearney | May 1 – June 15 | June 1 – July 20 |
| Kennett | Apr 10 – June 1 | June 1 – Aug 1 |
| Kirksville | May 1 – June 15 | June 1 – July 20 |
| Kirkwood | Apr 10 – June 1 | June 1 – Aug 1 |
| Lake St. Louis | Apr 20 – June 1 | June 1 – Aug 1 |
| Lebanon | May 1 – June 15 | June 1 – July 20 |
| Lee's Summit | Apr 20 – June 1 | June 1 – Aug 1 |
| Liberty | May 1 – June 15 | June 1 – July 20 |
| Manchester | Apr 10 – June 1 | June 1 – Aug 1 |
| Marshall | Apr 20 – June 1 | June 1 – July 20 |
| Maryland Heights | Apr 10 – June 1 | June 1 – Aug 1 |
| Maryville | May 1 – June 15 | June 1 – July 20 |
| Mexico | Apr 20 – June 1 | June 1 – July 20 |
| Moberly | Apr 20 – June 1 | June 1 – July 20 |
| Monett | Apr 20 – June 1 | June 1 – Aug 1 |
| Neosho | Apr 20 – June 1 | June 1 – Aug 1 |
| Nixa | Apr 20 – June 1 | June 1 – July 20 |
| O'Fallon | Apr 20 – June 1 | June 1 – Aug 1 |
| Overland | Apr 10 – June 1 | June 1 – Aug 1 |
| Ozark | Apr 20 – June 1 | June 1 – July 20 |
| Poplar Bluff | Apr 10 – June 1 | June 1 – Aug 10 |
| Raymore | Apr 20 – June 1 | June 1 – Aug 1 |
| Raytown | Apr 20 – June 1 | June 1 – Aug 1 |
| Republic | Apr 20 – June 1 | June 1 – Aug 1 |
| Rolla | Apr 20 – June 1 | June 1 – Aug 1 |
| Sedalia | May 1 – June 15 | June 1 – July 20 |
| Sikeston | Apr 10 – June 1 | June 1 – Aug 10 |
| Smithville | May 1 – June 15 | June 1 – July 20 |
| Springfield | Apr 10 – June 1 | June 1 – Aug 1 |
| St. Ann | Apr 10 – June 1 | June 1 – Aug 1 |
| St. Charles | Apr 20 – June 1 | June 1 – Aug 1 |
| St. Joseph | May 1 – June 15 | June 1 – July 20 |
| St. Louis | Apr 10 – June 1 | June 1 – Aug 1 |
| St. Peters | Apr 20 – June 1 | June 1 – Aug 1 |
| Town and Country | Apr 10 – June 1 | June 1 – Aug 1 |
| Troy | Apr 20 – June 1 | June 1 – July 20 |
| Union | Apr 20 – June 1 | June 1 – July 20 |
| University City | Apr 10 – June 1 | June 1 – Aug 1 |
| Warrensburg | Apr 20 – June 1 | June 1 – July 20 |
| Washington | Apr 20 – June 1 | June 1 – July 20 |
| Webb City | Apr 20 – June 1 | June 1 – Aug 1 |
| Webster Groves | Apr 10 – June 1 | June 1 – Aug 1 |
| Wentzville | Apr 20 – June 1 | June 1 – Aug 1 |
| West Plains | May 1 – June 15 | June 1 – July 20 |
| Wildwood | Apr 20 – June 1 | 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. “—” means the place's frost date is outside the table. The full USDA table for summer squash.