When to plant leeks in New Jersey

Plant out in Newark

Mar 21–Apr 4

Across New Jersey the window opens between March 12 and April 16. Find your city below; the dates follow each town's own average last frost.

Start indoors, Newark: Jan 10–Jan 24
Plant out, Newark: Mar 21–Apr 4
Last frost, Newark: Apr 4

Start seeds indoors 10–12 weeks before the last frost; plant out up to 2 weeks before the last frost. Plant leeks deep in a trench and fill it in as they grow to get long white stems.

Leeks planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

NewarkMar 21–Apr 4

Jersey CityMar 21–Apr 4

PatersonApr 1–Apr 15

ElizabethMar 19–Apr 2

Toms RiverApr 9–Apr 23

TrentonApr 3–Apr 17

CliftonApr 1–Apr 15

BayonneMar 19–Apr 2

East OrangeMar 21–Apr 4

CamdenMar 16–Mar 30

PassaicMar 20–Apr 3

LakewoodApr 9–Apr 23

Union CityMar 16–Mar 30

VinelandApr 10–Apr 24

HobokenMar 16–Mar 30

PlainfieldMar 28–Apr 11

New BrunswickApr 1–Apr 15

Perth AmboyApr 1–Apr 15

West New YorkMar 16–Mar 30

SayrevilleApr 1–Apr 15

HackensackMar 20–Apr 3

LindenMar 19–Apr 2

SicklervilleMar 25–Apr 8

KearnyMar 21–Apr 4

Fort LeeMar 20–Apr 3

Atlantic CityMar 12–Mar 26

Fair LawnMar 20–Apr 3

GarfieldMar 20–Apr 3

Long BranchMar 26–Apr 9

WestfieldMar 28–Apr 11

All 59 cities

City	Start indoors	Plant out	Last frost
Newark	Jan 10 to Jan 24	Mar 21 to Apr 4	Apr 4
Jersey City	Jan 10 to Jan 24	Mar 21 to Apr 4	Apr 4
Paterson	Jan 21 to Feb 4	Apr 1 to Apr 15	Apr 15
Elizabeth	Jan 8 to Jan 22	Mar 19 to Apr 2	Apr 2
Toms River	Jan 29 to Feb 12	Apr 9 to Apr 23	Apr 23
Trenton	Jan 23 to Feb 6	Apr 3 to Apr 17	Apr 17
Clifton	Jan 21 to Feb 4	Apr 1 to Apr 15	Apr 15
Bayonne	Jan 8 to Jan 22	Mar 19 to Apr 2	Apr 2
East Orange	Jan 10 to Jan 24	Mar 21 to Apr 4	Apr 4
Camden	Jan 5 to Jan 19	Mar 16 to Mar 30	Mar 30
Passaic	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Lakewood	Jan 29 to Feb 12	Apr 9 to Apr 23	Apr 23
Union City	Jan 5 to Jan 19	Mar 16 to Mar 30	Mar 30
Vineland	Jan 30 to Feb 13	Apr 10 to Apr 24	Apr 24
Hoboken	Jan 5 to Jan 19	Mar 16 to Mar 30	Mar 30
Plainfield	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11
New Brunswick	Jan 21 to Feb 4	Apr 1 to Apr 15	Apr 15
Perth Amboy	Jan 21 to Feb 4	Apr 1 to Apr 15	Apr 15
West New York	Jan 5 to Jan 19	Mar 16 to Mar 30	Mar 30
Sayreville	Jan 21 to Feb 4	Apr 1 to Apr 15	Apr 15
Hackensack	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Linden	Jan 8 to Jan 22	Mar 19 to Apr 2	Apr 2
Sicklerville	Jan 14 to Jan 28	Mar 25 to Apr 8	Apr 8
Kearny	Jan 10 to Jan 24	Mar 21 to Apr 4	Apr 4
Fort Lee	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Atlantic City	Jan 1 to Jan 15	Mar 12 to Mar 26	Mar 26
Fair Lawn	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Garfield	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Long Branch	Jan 15 to Jan 29	Mar 26 to Apr 9	Apr 9
Westfield	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11
Princeton	Jan 31 to Feb 14	Apr 11 to Apr 25	Apr 25
Rahway	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11
Englewood	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Bergenfield	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Bridgeton	Jan 16 to Jan 30	Mar 27 to Apr 10	Apr 10
Millville	Jan 30 to Feb 13	Apr 10 to Apr 24	Apr 24
Old Bridge	Jan 23 to Feb 6	Apr 3 to Apr 17	Apr 17
Paramus	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Cliffside Park	Jan 5 to Jan 19	Mar 16 to Mar 30	Mar 30
Ridgewood	Jan 21 to Feb 4	Apr 1 to Apr 15	Apr 15
Lodi	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Carteret	Jan 8 to Jan 22	Mar 19 to Apr 2	Apr 2
South Plainfield	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11
Glassboro	Jan 14 to Jan 28	Mar 25 to Apr 8	Apr 8
Somerset	Jan 21 to Feb 4	Apr 1 to Apr 15	Apr 15
Summit	Jan 24 to Feb 7	Apr 4 to Apr 18	Apr 18
Roselle	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11
North Plainfield	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11
Secaucus	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Hillsborough	Feb 5 to Feb 19	Apr 16 to Apr 30	Apr 30
Harrison	Jan 10 to Jan 24	Mar 21 to Apr 4	Apr 4
Lindenwold	Jan 14 to Jan 28	Mar 25 to Apr 8	Apr 8
Parsippany	Jan 23 to Feb 6	Apr 3 to Apr 17	Apr 17
Elmwood Park	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Pleasantville	Jan 1 to Jan 15	Mar 12 to Mar 26	Mar 26
Morristown	Jan 24 to Feb 7	Apr 4 to Apr 18	Apr 18
Palisades Park	Jan 9 to Jan 23	Mar 20 to Apr 3	Apr 3
Hawthorne	Jan 21 to Feb 4	Apr 1 to Apr 15	Apr 15
Woodbridge	Jan 17 to Jan 31	Mar 28 to Apr 11	Apr 11

Questions

When should I plant leeks in New Jersey?

In Newark, plant out from March 21 to April 4. Across New Jersey the window opens between March 12 and April 16, depending on the local last frost.

How is this date worked out?

Start seeds indoors 10–12 weeks before the last frost; plant out up to 2 weeks before the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for New Jersey

Leeks in other states

Frost dates for every city in New Jersey