When to plant Leeks in New Hampshire
In spring, from Apr 1 – May 1 in Dover to Apr 15 – May 15 in Lebanon.
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 |
|---|---|
| Claremont | Apr 15 – May 15 |
| Concord | Apr 15 – May 15 |
| Dover | Apr 1 – May 1 |
| Keene | Apr 15 – May 15 |
| Laconia | Apr 1 – May 1 |
| Lebanon | Apr 15 – May 15 |
| Manchester | Apr 1 – May 1 |
| Nashua | Apr 1 – May 1 |
| Portsmouth | Apr 1 – May 1 |
| Rochester | Apr 1 – May 1 |
| Somersworth | Apr 1 – May 1 |
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.