When to plant Leeks in Iowa
In spring, from Mar 1 – Apr 1 in Burlington to Apr 1 – May 1 in Waverly.
In fall: USDA's 1967 table lists leeks as generally spring-planted in every place here. Newer advice from your state's extension service may differ.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring |
|---|---|
| Altoona | Mar 15 – Apr 15 |
| Ames | Apr 1 – May 1 |
| Ankeny | Mar 15 – Apr 15 |
| Bettendorf | Mar 15 – Apr 15 |
| Boone | Apr 1 – May 1 |
| Burlington | Mar 1 – Apr 1 |
| Carroll | Apr 1 – May 1 |
| Cedar Falls | Apr 1 – May 1 |
| Cedar Rapids | Apr 1 – May 1 |
| Clinton | Mar 15 – Apr 15 |
| Clive | Mar 15 – Apr 15 |
| Coralville | Mar 15 – Apr 15 |
| Council Bluffs | Mar 15 – Apr 15 |
| Davenport | Mar 15 – Apr 15 |
| Des Moines | Mar 15 – Apr 15 |
| Dubuque | Mar 15 – Apr 15 |
| Fort Dodge | Apr 1 – May 1 |
| Grimes | Mar 15 – Apr 15 |
| Indianola | Mar 15 – Apr 15 |
| Iowa City | Mar 15 – Apr 15 |
| Johnston | Mar 15 – Apr 15 |
| Le Mars | Apr 1 – May 1 |
| Marion | Apr 1 – May 1 |
| Marshalltown | Apr 1 – May 1 |
| Mason City | Apr 1 – May 1 |
| Muscatine | Mar 15 – Apr 15 |
| Newton | Mar 15 – Apr 15 |
| North Liberty | Mar 15 – Apr 15 |
| Norwalk | Mar 15 – Apr 15 |
| Oskaloosa | Mar 15 – Apr 15 |
| Ottumwa | Mar 15 – Apr 15 |
| Pella | Mar 15 – Apr 15 |
| Pleasant Hill | Mar 15 – Apr 15 |
| Sioux City | Apr 1 – May 1 |
| Spencer | Apr 1 – May 1 |
| Storm Lake | Mar 15 – Apr 15 |
| Urbandale | Mar 15 – Apr 15 |
| Waterloo | Apr 1 – May 1 |
| Waukee | Mar 15 – Apr 15 |
| Waverly | Apr 1 – May 1 |
| West Des Moines | Mar 15 – Apr 15 |
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 leeks.