FrostCal

When to Plant Spinach in Arizona

In a typical Arizona location, sow outdoors Jan 2 – Jan 16. Across the state, the outdoor planting window starts as early as Nov 23 in Bullhead City and as late as Apr 23 in Flagstaff. For a fall crop, plant around Oct 10 – Oct 24. 3 cities in Arizona are essentially frost-free and can plant on a year-round schedule.

Method Direct sow
Days to maturity 40–50 days

Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.

Spinach Planting Dates by City

CityDirect sowFall planting
PhoenixNov 24 – Dec 8Nov 8 – Nov 22
TucsonDec 9 – Dec 23Oct 22 – Nov 5
MesaJan 2 – Jan 16Oct 10 – Oct 24
ChandlerJan 2 – Jan 16Oct 10 – Oct 24
GilbertJan 2 – Jan 16Oct 10 – Oct 24
GlendaleDec 9 – Dec 23Oct 20 – Nov 3
ScottsdaleJan 2 – Jan 16Oct 10 – Oct 24
PeoriaDec 9 – Dec 23Oct 20 – Nov 3
TempeJan 2 – Jan 16Oct 10 – Oct 24
Tempe JunctionJan 2 – Jan 16Oct 10 – Oct 24
SurpriseDec 9 – Dec 23Oct 20 – Nov 3
YumaNov 27 – Dec 11Nov 2 – Nov 16
San Tan ValleyDec 21 – Jan 4Oct 16 – Oct 30
AvondaleNov 26 – Dec 10Oct 29 – Nov 12
GoodyearNov 26 – Dec 10Oct 29 – Nov 12
FlagstaffApr 23 – May 7Aug 3 – Aug 17
Casas AdobesJan 15 – Jan 29Oct 9 – Oct 23
Lake Havasu CityNov 24 – Dec 8Nov 3 – Nov 17
Casa GrandeDec 25 – Jan 8Oct 11 – Oct 25
BuckeyeNov 26 – Dec 10Oct 29 – Nov 12
Catalina FoothillsJan 9 – Jan 23Oct 2 – Oct 16
MaricopaJan 12 – Jan 26Sep 29 – Oct 13
Oro ValleyFeb 19 – Mar 5Sep 16 – Sep 30
Sierra VistaFeb 22 – Mar 8Sep 14 – Sep 28
Prescott ValleyMar 9 – Mar 23Sep 1 – Sep 15
PrescottMar 19 – Apr 2Aug 25 – Sep 8
MaranaJan 12 – Jan 26Oct 11 – Oct 25
Bullhead CityNov 23 – Dec 7Oct 28 – Nov 11
Apache JunctionDec 31 – Jan 14Oct 15 – Oct 29
Sun CityDec 9 – Dec 23Oct 20 – Nov 3

Showing the 30 most populous of 72 Arizona cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Arizona cities.

Frequently Asked Questions

When should I plant spinach in Arizona?

In a typical Arizona location, sow outdoors Jan 2 – Jan 16. Across the state, the outdoor planting window starts as early as Nov 23 in Bullhead City and as late as Apr 23 in Flagstaff. For a fall crop, plant around Oct 10 – Oct 24. 3 cities in Arizona are essentially frost-free and can plant on a year-round schedule.

When is the last frost in Arizona?

The average last spring frost in Arizona ranges from January 4 in Bullhead City to June 4 in Flagstaff, based on NOAA 1991–2020 climate normals.

How long do spinach take to grow?

Spinach typically take 40–50 days from planting to harvest. Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.

Other Crops in Arizona

When to plant spinach in other states

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