FrostCal

When to Plant Sweet Potatoes in Arizona

In a typical Arizona location, plant outdoors Feb 27 – Mar 13. Across the state, the outdoor planting window starts as early as Jan 18 in Bullhead City and as late as Jun 18 in Flagstaff. 3 cities in Arizona are essentially frost-free and can plant on a year-round schedule.

Method Plant out (slips, crowns, or tubers)
Days to maturity 90–120 days

Set out slips 2-4 weeks after last frost once soil is thoroughly warm (65F+); very frost/cold sensitive.

Sweet Potatoes Planting Dates by City

CityPlant outdoors
PhoenixJan 19 – Feb 2
TucsonFeb 3 – Feb 17
MesaFeb 27 – Mar 13
ChandlerFeb 27 – Mar 13
GilbertFeb 27 – Mar 13
GlendaleFeb 3 – Feb 17
ScottsdaleFeb 27 – Mar 13
PeoriaFeb 3 – Feb 17
TempeFeb 27 – Mar 13
Tempe JunctionFeb 27 – Mar 13
SurpriseFeb 3 – Feb 17
YumaJan 22 – Feb 5
San Tan ValleyFeb 15 – Mar 1
AvondaleJan 21 – Feb 4
GoodyearJan 21 – Feb 4
FlagstaffJun 18 – Jul 2
Casas AdobesMar 12 – Mar 26
Lake Havasu CityJan 19 – Feb 2
Casa GrandeFeb 19 – Mar 5
BuckeyeJan 21 – Feb 4
Catalina FoothillsMar 6 – Mar 20
MaricopaMar 9 – Mar 23
Oro ValleyApr 16 – Apr 30
Sierra VistaApr 19 – May 3
Prescott ValleyMay 4 – May 18
PrescottMay 14 – May 28
MaranaMar 9 – Mar 23
Bullhead CityJan 18 – Feb 1
Apache JunctionFeb 25 – Mar 11
Sun CityFeb 3 – Feb 17

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 sweet potatoes in Arizona?

In a typical Arizona location, plant outdoors Feb 27 – Mar 13. Across the state, the outdoor planting window starts as early as Jan 18 in Bullhead City and as late as Jun 18 in Flagstaff. 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 sweet potatoes take to grow?

Sweet Potatoes typically take 90–120 days from planting to harvest. Set out slips 2-4 weeks after last frost once soil is thoroughly warm (65F+); very frost/cold sensitive.

Other Crops in Arizona

When to plant sweet potatoes in other states

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