When to plant Onions in Kentucky
In spring, from Feb 15 – Mar 15 in Hopkinsville to Apr 1 – May 1 in Shelbyville.
In fall, Sept 1 – Oct 15 in Shively.
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 |
|---|---|---|
| Alexandria | Mar 15 – Apr 10 | Spring-planted |
| Ashland | Mar 15 – Apr 10 | Spring-planted |
| Bardstown | Mar 1 – Apr 1 | Spring-planted |
| Berea | Mar 1 – Apr 1 | Not listed |
| Bowling Green | Mar 1 – Apr 1 | Not listed |
| Campbellsville | Mar 1 – Apr 1 | Spring-planted |
| Covington | Mar 15 – Apr 10 | Spring-planted |
| Danville | Mar 1 – Apr 1 | Not listed |
| Elizabethtown | Mar 15 – Apr 10 | Spring-planted |
| Erlanger | Mar 15 – Apr 10 | Spring-planted |
| Florence | Mar 15 – Apr 10 | Spring-planted |
| Fort Thomas | Mar 15 – Apr 10 | Spring-planted |
| Frankfort | Mar 1 – Apr 1 | Spring-planted |
| Franklin | Mar 1 – Apr 1 | Not listed |
| Georgetown | Mar 15 – Apr 10 | Spring-planted |
| Glasgow | Mar 1 – Apr 1 | Not listed |
| Henderson | Mar 1 – Apr 1 | Not listed |
| Hopkinsville | Feb 15 – Mar 15 | Not listed |
| Independence | Mar 15 – Apr 10 | Spring-planted |
| Jeffersontown | Feb 15 – Mar 15 | Not listed |
| La Grange | Mar 1 – Apr 1 | Spring-planted |
| Lawrenceburg | Mar 1 – Apr 1 | Not listed |
| Lexington | Mar 1 – Apr 1 | Not listed |
| Louisville | Mar 1 – Apr 1 | Not listed |
| Lyndon | Feb 15 – Mar 15 | Not listed |
| Madisonville | Feb 15 – Mar 15 | Not listed |
| Mount Washington | Mar 1 – Apr 1 | Not listed |
| Murray | Mar 1 – Apr 1 | Not listed |
| Newport | Mar 15 – Apr 10 | Spring-planted |
| Nicholasville | Mar 1 – Apr 1 | Not listed |
| Owensboro | Feb 15 – Mar 15 | Not listed |
| Paducah | Mar 1 – Apr 1 | Not listed |
| Paris | Mar 15 – Apr 10 | Spring-planted |
| Radcliff | Mar 15 – Apr 10 | Spring-planted |
| Richmond | Mar 1 – Apr 1 | Spring-planted |
| Shelbyville | Apr 1 – May 1 | Spring-planted |
| Shepherdsville | Mar 15 – Apr 10 | Spring-planted |
| Shively | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Somerset | Mar 1 – Apr 1 | Not listed |
| St. Matthews | Feb 15 – Mar 15 | Not listed |
| Versailles | Mar 1 – Apr 1 | Not listed |
| Winchester | Mar 15 – Apr 10 | 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.