When to plant Onion sets in New Jersey

In spring, from Feb 15 – Mar 20 in Atlantic City to Mar 10 – Apr 1 in Wanaque.

In fall, from Oct 1 – Dec 1 in Bayonne to Nov 1 – Dec 31 in West New York.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Onion sets planting dates by place in New Jersey
PlaceSpringFall
Asbury ParkMar 1 – Apr 1Not listed
Atlantic CityFeb 15 – Mar 20Nov 1 – Dec 31Soon
BayonneFeb 15 – Mar 20Oct 1 – Dec 1Now
BeachwoodMar 10 – Apr 1Spring-planted
BellmawrFeb 15 – Mar 20Oct 1 – Dec 1Now
BergenfieldFeb 15 – Mar 20Not listed
Bound BrookMar 10 – Apr 10Spring-planted
BridgetonMar 1 – Apr 1Not listed
BurlingtonMar 1 – Apr 1Not listed
CamdenFeb 15 – Mar 20Nov 1 – Dec 31Soon
CarteretFeb 15 – Mar 20Oct 1 – Dec 1Now
ChathamMar 10 – Apr 1Not listed
Cliffside ParkFeb 15 – Mar 20Nov 1 – Dec 31Soon
CliftonMar 1 – Apr 1Not listed
CollingswoodMar 1 – Apr 1Not listed
DoverMar 10 – Apr 1Spring-planted
DumontFeb 15 – Mar 20Not listed
East OrangeFeb 15 – Mar 20Oct 1 – Dec 1Now
East RutherfordFeb 15 – Mar 20Not listed
EatontownMar 1 – Apr 1Not listed
EdgewaterFeb 15 – Mar 20Nov 1 – Dec 31Soon
ElizabethFeb 15 – Mar 20Oct 1 – Dec 1Now
Elmwood ParkFeb 15 – Mar 20Not listed
EnglewoodFeb 15 – Mar 20Not listed
Fair LawnFeb 15 – Mar 20Not listed
FairviewFeb 15 – Mar 20Nov 1 – Dec 31Soon
Florham ParkMar 10 – Apr 1Not listed
Fort LeeFeb 15 – Mar 20Not listed
Franklin LakesMar 10 – Apr 1Spring-planted
FreeholdMar 10 – Apr 1Spring-planted
GarfieldFeb 15 – Mar 20Not listed
GlassboroMar 1 – Apr 1Not listed
Glen RockMar 1 – Apr 1Not listed
Gloucester CityFeb 15 – Mar 20Nov 1 – Dec 31Soon
GuttenbergFeb 15 – Mar 20Nov 1 – Dec 31Soon
HackensackFeb 15 – Mar 20Not listed
HackettstownMar 10 – Apr 1Spring-planted
HaddonfieldMar 1 – Apr 1Not listed
HammontonMar 1 – Apr 1Not listed
HarrisonFeb 15 – Mar 20Oct 1 – Dec 1Now
Hasbrouck HeightsFeb 15 – Mar 20Not listed
HawthorneMar 1 – Apr 1Not listed
Highland ParkMar 1 – Apr 1Not listed
HillsdaleFeb 15 – Mar 20Not listed
HobokenFeb 15 – Mar 20Nov 1 – Dec 31Soon
HopatcongMar 10 – Apr 1Spring-planted
Jersey CityFeb 15 – Mar 20Oct 1 – Dec 1Now
KearnyFeb 15 – Mar 20Oct 1 – Dec 1Now
KinnelonMar 10 – Apr 1Spring-planted
Lincoln ParkMar 1 – Apr 1Not listed
LindenFeb 15 – Mar 20Oct 1 – Dec 1Now
LindenwoldMar 1 – Apr 1Not listed
Little FerryFeb 15 – Mar 20Not listed
LodiFeb 15 – Mar 20Not listed
Long BranchMar 1 – Apr 1Not listed
MadisonMar 10 – Apr 1Not listed
ManvilleMar 10 – Apr 10Spring-planted
MaywoodFeb 15 – Mar 20Not listed
MetuchenMar 1 – Apr 1Not listed
MiddlesexMar 1 – Apr 1Not listed
MillvilleMar 10 – Apr 1Spring-planted
MorristownMar 10 – Apr 1Not listed
New BrunswickMar 1 – Apr 1Not listed
New MilfordFeb 15 – Mar 20Not listed
New ProvidenceMar 10 – Apr 1Not listed
NewarkFeb 15 – Mar 20Oct 1 – Dec 1Now
North ArlingtonFeb 15 – Mar 20Oct 1 – Dec 1Now
North PlainfieldMar 1 – Apr 1Not listed
OaklandMar 10 – Apr 1Spring-planted
Ocean CityFeb 15 – Mar 20Nov 1 – Dec 31Soon
Palisades ParkFeb 15 – Mar 20Not listed
ParamusFeb 15 – Mar 20Not listed
PassaicFeb 15 – Mar 20Not listed
PatersonMar 1 – Apr 1Not listed
Perth AmboyMar 1 – Apr 1Not listed
PhillipsburgMar 10 – Apr 1Spring-planted
Pine HillMar 1 – Apr 1Not listed
PlainfieldMar 1 – Apr 1Not listed
PleasantvilleFeb 15 – Mar 20Nov 1 – Dec 31Soon
Point PleasantMar 10 – Apr 1Spring-planted
Pompton LakesMar 10 – Apr 1Spring-planted
PrincetonMar 10 – Apr 1Spring-planted
RahwayMar 1 – Apr 1Not listed
RamseyMar 10 – Apr 1Spring-planted
Red BankMar 1 – Apr 1Not listed
RidgefieldFeb 15 – Mar 20Not listed
Ridgefield ParkFeb 15 – Mar 20Not listed
RidgewoodMar 1 – Apr 1Not listed
RingwoodMar 10 – Apr 1Spring-planted
River EdgeFeb 15 – Mar 20Not listed
RoselleMar 1 – Apr 1Not listed
Roselle ParkMar 1 – Apr 1Not listed
RutherfordFeb 15 – Mar 20Not listed
SayrevilleMar 1 – Apr 1Not listed
SecaucusFeb 15 – Mar 20Not listed
Somers PointFeb 15 – Mar 20Nov 1 – Dec 31Soon
SomervilleMar 10 – Apr 10Spring-planted
South AmboyMar 1 – Apr 1Not listed
South PlainfieldMar 1 – Apr 1Not listed
South RiverMar 1 – Apr 1Not listed
SummitMar 10 – Apr 1Not listed
TenaflyFeb 15 – Mar 20Not listed
Tinton FallsMar 1 – Apr 1Not listed
TotowaMar 1 – Apr 1Not listed
TrentonMar 10 – Apr 1Not listed
Union CityFeb 15 – Mar 20Nov 1 – Dec 31Soon
VinelandMar 10 – Apr 1Spring-planted
WaldwickMar 10 – Apr 1Spring-planted
WallingtonFeb 15 – Mar 20Not listed
WanaqueMar 10 – Apr 1Spring-planted
West New YorkFeb 15 – Mar 20Nov 1 – Dec 31Soon
WestfieldMar 1 – Apr 1Not listed
WestwoodFeb 15 – Mar 20Not listed
Wood-RidgeFeb 15 – Mar 20Not listed
WoodburyFeb 15 – Mar 20Oct 1 – Dec 1Now
Woodland ParkMar 1 – Apr 1Not listed

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 onion sets.