When to plant Spinach in Utah

In spring, from Jan 15 – Mar 10 in Ivins to Apr 20 – June 15 in Heber.

In fall, from June 1 – Aug 1 in Eagle Mountain to Sept 15 – Nov 1 in Washington.

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

Spinach planting dates by place in Utah
PlaceSpringFall
AlpineMar 20 – Apr 20Aug 1 – Sept 1
American ForkMar 1 – Apr 15Aug 20 – Sept 10
BluffdaleMar 1 – Apr 15Aug 20 – Sept 10
BountifulMar 1 – Apr 15Aug 20 – Sept 10
Brigham CityMar 20 – Apr 20July 1 – Aug 15
Cedar CityMar 20 – Apr 20Aug 1 – Sept 1
CentervilleMar 1 – Apr 15Aug 20 – Sept 10
ClearfieldMar 20 – Apr 20Aug 20 – Sept 10
ClintonMar 1 – Apr 15Aug 20 – Sept 10
Cottonwood HeightsMar 20 – Apr 20Aug 20 – Sept 10
DraperMar 1 – Apr 15Aug 20 – Sept 10
Eagle MountainApr 20 – June 15June 1 – Aug 1
FarmingtonMar 1 – Apr 15Aug 20 – Sept 10
GrantsvilleMar 20 – Apr 20Aug 1 – Sept 1
HeberApr 20 – June 15June 1 – Aug 1
HerrimanMar 1 – Apr 15Aug 20 – Sept 10
HighlandMar 20 – Apr 20Aug 1 – Sept 1
HolladayMar 20 – Apr 20Aug 20 – Sept 10
HurricaneFeb 1 – Mar 20Sept 15 – Nov 1Now
HyrumApr 1 – June 15July 1 – Aug 15
IvinsJan 15 – Mar 10Sept 15 – Nov 1Now
KaysvilleMar 1 – Apr 15Aug 20 – Sept 10
Kearns metroFeb 15 – Apr 1Sept 1 – Oct 1
LaytonMar 20 – Apr 20Aug 20 – Sept 10
LehiMar 20 – Apr 20Aug 1 – Sept 1
LindonMar 1 – Apr 15Aug 20 – Sept 10
LoganApr 1 – June 15July 1 – Aug 15
Magna metroFeb 1 – Mar 20Sept 1 – Oct 1
MapletonMar 1 – Apr 15Aug 20 – Sept 10
MidvaleMar 20 – Apr 20Aug 20 – Sept 10
MillcreekMar 1 – Apr 15Aug 20 – Sept 10
MurrayMar 20 – Apr 20Aug 20 – Sept 10
North LoganMar 20 – Apr 20Aug 20 – Sept 10
North OgdenMar 1 – Apr 15Aug 20 – Sept 10
North Salt LakeMar 1 – Apr 15Aug 20 – Sept 10
OgdenMar 1 – Apr 15Aug 20 – Sept 10
OremMar 1 – Apr 15Aug 20 – Sept 10
PaysonMar 20 – Apr 20Aug 1 – Sept 1
Pleasant GroveMar 1 – Apr 15Aug 20 – Sept 10
Pleasant ViewMar 1 – Apr 15Aug 20 – Sept 10
ProvoMar 1 – Apr 15Aug 20 – Sept 10
RivertonMar 1 – Apr 15Aug 20 – Sept 10
RoyMar 1 – Apr 15Aug 20 – Sept 10
SalemMar 1 – Apr 15Aug 20 – Sept 10
Salt Lake CityFeb 1 – Mar 20Sept 15 – Nov 1Now
SandyMar 20 – Apr 20Aug 20 – Sept 10
SantaquinMar 20 – Apr 20Aug 1 – Sept 1
Saratoga SpringsMar 20 – Apr 20Aug 1 – Sept 1
SmithfieldApr 1 – June 15July 1 – Aug 15
South JordanMar 1 – Apr 15Aug 20 – Sept 10
South OgdenMar 1 – Apr 15Aug 20 – Sept 10
South Salt LakeFeb 1 – Mar 20Sept 15 – Nov 1Now
Spanish ForkMar 1 – Apr 15Aug 20 – Sept 10
SpringvilleMar 1 – Apr 15Aug 20 – Sept 10
St. GeorgeJan 15 – Mar 10Sept 15 – Nov 1Now
SyracuseMar 1 – Apr 15Aug 20 – Sept 10
TaylorsvilleFeb 1 – Mar 20Sept 15 – Nov 1Now
TooeleMar 20 – Apr 20Aug 20 – Sept 10
TremontonMar 1 – Apr 15Aug 20 – Sept 10
VernalApr 1 – June 15Aug 1 – Sept 1
VineyardMar 1 – Apr 15Aug 20 – Sept 10
WashingtonJan 15 – Mar 10Sept 15 – Nov 1Now
West HavenMar 1 – Apr 15Aug 20 – Sept 10
West JordanMar 1 – Apr 15Aug 20 – Sept 10
West PointMar 1 – Apr 15Aug 20 – Sept 10
West Valley CityFeb 15 – Apr 1Sept 1 – Oct 1
Woods CrossMar 1 – Apr 15Aug 20 – Sept 10

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 spinach.