When to plant onions in New Jersey

Plant out in Newark

Feb 21–Mar 14

Across New Jersey the window opens between February 12 and March 19. Find your city below; the dates follow each town's own average last frost.

Start indoors, Newark: Jan 10–Feb 7
Plant out, Newark: Feb 21–Mar 14
Last frost, Newark: Apr 4

Start seeds indoors 8–12 weeks before the last frost; plant out 3–6 weeks before the last frost. Northern gardens need long-day varieties and southern gardens need short-day ones. A wrong pick gives small bulbs.

Onions planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

NewarkFeb 21–Mar 14

Jersey CityFeb 21–Mar 14

PatersonMar 4–Mar 25

ElizabethFeb 19–Mar 12

Toms RiverMar 12–Apr 2

TrentonMar 6–Mar 27

CliftonMar 4–Mar 25

BayonneFeb 19–Mar 12

East OrangeFeb 21–Mar 14

CamdenFeb 16–Mar 9

PassaicFeb 20–Mar 13

LakewoodMar 12–Apr 2

Union CityFeb 16–Mar 9

VinelandMar 13–Apr 3

HobokenFeb 16–Mar 9

PlainfieldFeb 28–Mar 21

New BrunswickMar 4–Mar 25

Perth AmboyMar 4–Mar 25

West New YorkFeb 16–Mar 9

SayrevilleMar 4–Mar 25

HackensackFeb 20–Mar 13

LindenFeb 19–Mar 12

SicklervilleFeb 25–Mar 18

KearnyFeb 21–Mar 14

Fort LeeFeb 20–Mar 13

Atlantic CityFeb 12–Mar 5

Fair LawnFeb 20–Mar 13

GarfieldFeb 20–Mar 13

Long BranchFeb 26–Mar 19

WestfieldFeb 28–Mar 21

All 59 cities

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

Questions

When should I plant onions in New Jersey?

In Newark, plant out from February 21 to March 14. Across New Jersey the window opens between February 12 and March 19, depending on the local last frost.

How is this date worked out?

Start seeds indoors 8–12 weeks before the last frost; plant out 3–6 weeks before the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for New Jersey

Onions in other states

Frost dates for every city in New Jersey