When to plant Beets in Arizona

In spring, from Jan 1 – Mar 15 in El Mirage to May 1 – June 15 in Flagstaff.

For a fall crop, from June 1 – July 10 in Flagstaff to Sept 1 – Dec 31 in Yuma.

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

Beets planting dates by place in Arizona
PlaceSpringFall
Apache JunctionJan 10 – Mar 15Sept 1 – Dec 31Now
Avondale—Sept 1 – Dec 31Now
Buckeye—Sept 1 – Dec 31Now
Bullhead City—Sept 1 – Dec 31Now
Camp VerdeMar 20 – June 1Aug 1 – Sept 1
Casa GrandeJan 10 – Mar 15Sept 1 – Dec 31Now
ChandlerJan 10 – Mar 15Sept 1 – Dec 15Now
Chino ValleyApr 1 – June 15July 1 – Aug 5
CoolidgeJan 20 – Apr 1Sept 1 – Dec 15Now
CottonwoodMar 1 – June 1Aug 1 – Oct 1
DouglasFeb 15 – May 15Aug 1 – Oct 1
El MirageJan 1 – Mar 15Sept 1 – Dec 31Now
EloyFeb 1 – Apr 15Sept 1 – Dec 15Now
FlagstaffMay 1 – June 15June 1 – July 10
FlorenceJan 1 – Mar 15Sept 1 – Dec 31Now
Fountain Hills—Sept 1 – Dec 31Now
GilbertJan 1 – Mar 15Sept 1 – Dec 31Now
GlendaleJan 1 – Mar 15Sept 1 – Dec 31Now
Goodyear—Sept 1 – Dec 31Now
KingmanMar 1 – June 1Aug 1 – Oct 1
Lake Havasu City—Sept 1 – Dec 31Now
MaranaMar 1 – June 1Aug 1 – Oct 1
MaricopaJan 20 – Apr 1Sept 1 – Dec 1Now
MesaJan 1 – Mar 15Sept 1 – Dec 31Now
NogalesFeb 15 – May 15Sept 1 – Dec 1Now
Oro ValleyMar 1 – June 1Aug 1 – Oct 1
Paradise Valley—Sept 1 – Dec 31Now
PaysonApr 1 – June 15July 1 – Aug 5
PeoriaJan 10 – Mar 15Sept 1 – Dec 31Now
Phoenix—Sept 1 – Dec 31Now
PrescottApr 1 – June 15July 1 – Aug 5
Prescott ValleyApr 1 – June 15July 1 – Aug 5
Queen CreekJan 1 – Mar 15Sept 1 – Dec 31Now
SaffordFeb 15 – May 15Aug 1 – Oct 1
SahuaritaFeb 1 – Apr 15Sept 1 – Dec 15Now
San Luis—Sept 1 – Dec 31Now
ScottsdaleJan 1 – Mar 15Sept 1 – Dec 31Now
Show LowApr 1 – June 15June 15 – July 25
Sierra VistaMar 10 – June 1Aug 1 – Oct 1
Somerton—Sept 1 – Dec 31Now
SurpriseJan 10 – Mar 15Sept 1 – Dec 31Now
TempeJan 10 – Mar 15Sept 1 – Dec 15Now
TucsonJan 10 – Mar 15Sept 1 – Dec 31Now
Yuma—Sept 1 – Dec 31Now

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means outside the table. The full USDA table for beets.