When to plant Leeks in New Jersey
In spring, from Feb 15 – Mar 15 in Atlantic City to Apr 1 – May 1 in Somerville.
In fall, Sept 1 – Nov 1.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Asbury Park | Mar 1 – Apr 1 | Spring-planted |
| Atlantic City | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Bayonne | Feb 15 – Mar 15 | Spring-planted |
| Beachwood | Mar 15 – Apr 15 | Spring-planted |
| Bellmawr | Feb 15 – Mar 15 | Spring-planted |
| Bergenfield | Feb 15 – Mar 15 | Spring-planted |
| Bound Brook | Apr 1 – May 1 | Spring-planted |
| Bridgeton | Mar 1 – Apr 1 | Spring-planted |
| Burlington | Mar 1 – Apr 1 | Spring-planted |
| Camden | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Carteret | Feb 15 – Mar 15 | Spring-planted |
| Chatham | Mar 15 – Apr 15 | Spring-planted |
| Cliffside Park | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Clifton | Mar 1 – Apr 1 | Spring-planted |
| Collingswood | Mar 1 – Apr 1 | Spring-planted |
| Dover | Mar 15 – Apr 15 | Spring-planted |
| Dumont | Feb 15 – Mar 15 | Spring-planted |
| East Orange | Feb 15 – Mar 15 | Spring-planted |
| East Rutherford | Feb 15 – Mar 15 | Spring-planted |
| Eatontown | Mar 1 – Apr 1 | Spring-planted |
| Edgewater | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Elizabeth | Feb 15 – Mar 15 | Spring-planted |
| Elmwood Park | Feb 15 – Mar 15 | Spring-planted |
| Englewood | Feb 15 – Mar 15 | Spring-planted |
| Fair Lawn | Feb 15 – Mar 15 | Spring-planted |
| Fairview | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Florham Park | Mar 15 – Apr 15 | Spring-planted |
| Fort Lee | Feb 15 – Mar 15 | Spring-planted |
| Franklin Lakes | Mar 15 – Apr 15 | Spring-planted |
| Freehold | Mar 15 – Apr 15 | Spring-planted |
| Garfield | Feb 15 – Mar 15 | Spring-planted |
| Glassboro | Mar 1 – Apr 1 | Spring-planted |
| Glen Rock | Mar 1 – Apr 1 | Spring-planted |
| Gloucester City | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Guttenberg | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Hackensack | Feb 15 – Mar 15 | Spring-planted |
| Hackettstown | Mar 15 – Apr 15 | Spring-planted |
| Haddonfield | Mar 1 – Apr 1 | Spring-planted |
| Hammonton | Mar 1 – Apr 1 | Spring-planted |
| Harrison | Feb 15 – Mar 15 | Spring-planted |
| Hasbrouck Heights | Feb 15 – Mar 15 | Spring-planted |
| Hawthorne | Mar 1 – Apr 1 | Spring-planted |
| Highland Park | Mar 1 – Apr 1 | Spring-planted |
| Hillsdale | Feb 15 – Mar 15 | Spring-planted |
| Hoboken | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Hopatcong | Mar 15 – Apr 15 | Spring-planted |
| Jersey City | Feb 15 – Mar 15 | Spring-planted |
| Kearny | Feb 15 – Mar 15 | Spring-planted |
| Kinnelon | Mar 15 – Apr 15 | Spring-planted |
| Lincoln Park | Mar 1 – Apr 1 | Spring-planted |
| Linden | Feb 15 – Mar 15 | Spring-planted |
| Lindenwold | Mar 1 – Apr 1 | Spring-planted |
| Little Ferry | Feb 15 – Mar 15 | Spring-planted |
| Lodi | Feb 15 – Mar 15 | Spring-planted |
| Long Branch | Mar 1 – Apr 1 | Spring-planted |
| Madison | Mar 15 – Apr 15 | Spring-planted |
| Manville | Apr 1 – May 1 | Spring-planted |
| Maywood | Feb 15 – Mar 15 | Spring-planted |
| Metuchen | Mar 1 – Apr 1 | Spring-planted |
| Middlesex | Mar 1 – Apr 1 | Spring-planted |
| Millville | Mar 15 – Apr 15 | Spring-planted |
| Morristown | Mar 15 – Apr 15 | Spring-planted |
| New Brunswick | Mar 1 – Apr 1 | Spring-planted |
| New Milford | Feb 15 – Mar 15 | Spring-planted |
| New Providence | Mar 15 – Apr 15 | Spring-planted |
| Newark | Feb 15 – Mar 15 | Spring-planted |
| North Arlington | Feb 15 – Mar 15 | Spring-planted |
| North Plainfield | Mar 1 – Apr 1 | Spring-planted |
| Oakland | Mar 15 – Apr 15 | Spring-planted |
| Ocean City | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Palisades Park | Feb 15 – Mar 15 | Spring-planted |
| Paramus | Feb 15 – Mar 15 | Spring-planted |
| Passaic | Feb 15 – Mar 15 | Spring-planted |
| Paterson | Mar 1 – Apr 1 | Spring-planted |
| Perth Amboy | Mar 1 – Apr 1 | Spring-planted |
| Phillipsburg | Mar 15 – Apr 15 | Spring-planted |
| Pine Hill | Mar 1 – Apr 1 | Spring-planted |
| Plainfield | Mar 1 – Apr 1 | Spring-planted |
| Pleasantville | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Point Pleasant | Mar 15 – Apr 15 | Spring-planted |
| Pompton Lakes | Mar 15 – Apr 15 | Spring-planted |
| Princeton | Mar 15 – Apr 15 | Spring-planted |
| Rahway | Mar 1 – Apr 1 | Spring-planted |
| Ramsey | Mar 15 – Apr 15 | Spring-planted |
| Red Bank | Mar 1 – Apr 1 | Spring-planted |
| Ridgefield | Feb 15 – Mar 15 | Spring-planted |
| Ridgefield Park | Feb 15 – Mar 15 | Spring-planted |
| Ridgewood | Mar 1 – Apr 1 | Spring-planted |
| Ringwood | Mar 15 – Apr 15 | Spring-planted |
| River Edge | Feb 15 – Mar 15 | Spring-planted |
| Roselle | Mar 1 – Apr 1 | Spring-planted |
| Roselle Park | Mar 1 – Apr 1 | Spring-planted |
| Rutherford | Feb 15 – Mar 15 | Spring-planted |
| Sayreville | Mar 1 – Apr 1 | Spring-planted |
| Secaucus | Feb 15 – Mar 15 | Spring-planted |
| Somers Point | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Somerville | Apr 1 – May 1 | Spring-planted |
| South Amboy | Mar 1 – Apr 1 | Spring-planted |
| South Plainfield | Mar 1 – Apr 1 | Spring-planted |
| South River | Mar 1 – Apr 1 | Spring-planted |
| Summit | Mar 15 – Apr 15 | Spring-planted |
| Tenafly | Feb 15 – Mar 15 | Spring-planted |
| Tinton Falls | Mar 1 – Apr 1 | Spring-planted |
| Totowa | Mar 1 – Apr 1 | Spring-planted |
| Trenton | Mar 15 – Apr 15 | Spring-planted |
| Union City | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Vineland | Mar 15 – Apr 15 | Spring-planted |
| Waldwick | Mar 15 – Apr 15 | Spring-planted |
| Wallington | Feb 15 – Mar 15 | Spring-planted |
| Wanaque | Mar 15 – Apr 15 | Spring-planted |
| West New York | Feb 15 – Mar 15 | Sept 1 – Nov 1Now |
| Westfield | Mar 1 – Apr 1 | Spring-planted |
| Westwood | Feb 15 – Mar 15 | Spring-planted |
| Wood-Ridge | Feb 15 – Mar 15 | Spring-planted |
| Woodbury | Feb 15 – Mar 15 | Spring-planted |
| Woodland Park | Mar 1 – Apr 1 | 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 leeks.