FrostCal

When to Plant Sweet Potatoes in Alaska

In a typical Alaska location, plant outdoors May 30 – Jun 13. Across the state, the outdoor planting window starts as early as Apr 18 in Ketchikan and as late as Jun 25 in Kalifornsky.

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
AnchorageMay 15 – May 29
FairbanksMay 30 – Jun 13
JuneauMay 4 – May 18
Eagle RiverMay 23 – Jun 6
BadgerJun 5 – Jun 19
Knik-FairviewJun 1 – Jun 15
CollegeJun 1 – Jun 15
WasillaMay 30 – Jun 13
SitkaMay 17 – May 31
LakesMay 30 – Jun 13
KetchikanApr 18 – May 2
TanainaMay 30 – Jun 13
KalifornskyJun 25 – Jul 9
KenaiJun 7 – Jun 21
Meadow LakesMay 30 – Jun 13
PalmerMay 20 – Jun 3
Elmendorf Air Force BaseMay 23 – Jun 6
BethelJun 4 – Jun 18
KodiakMay 13 – May 27
SterlingJun 3 – Jun 17

Showing the 20 most populous of 20 Alaska cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Alaska cities.

Frequently Asked Questions

When should I plant sweet potatoes in Alaska?

In a typical Alaska location, plant outdoors May 30 – Jun 13. Across the state, the outdoor planting window starts as early as Apr 18 in Ketchikan and as late as Jun 25 in Kalifornsky.

When is the last frost in Alaska?

The average last spring frost in Alaska ranges from April 4 in Ketchikan to June 11 in Kalifornsky, 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 Alaska

When to plant sweet potatoes in other states

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