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When to Plant Sweet Potatoes in Alaska

Alaska spans USDA hardiness 1a to 8b (zones 1a to 8b on this page). Plant sweet potatoes by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.

Jump to: Zone 1a · Zone 1b · Zone 2a · Zone 2b · Zone 3a · Zone 3b · Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b · Zone 7a · Zone 7b · Zone 8a · Zone 8b

Sweet Potatoes planting calendar for Alaska, Zone 1a

Average last spring frost

May 24

Average first fall frost

August 25

🌿

Direct sow

Jun 21

🌾

Projected first harvest

Sep 29

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 1a (approximate)

Most sweet potatoes mature in about 100 days.

Sweet Potatoes planting calendar for Alaska, Zone 1b

Average last spring frost

May 29

Average first fall frost

August 28

🌿

Direct sow

Jun 26

🌾

Projected first harvest

Oct 4

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 1b (approximate)

Most sweet potatoes mature in about 100 days.

Sweet Potatoes planting calendar for Alaska, Zone 2a

Average last spring frost

May 24

Average first fall frost

September 5

🌿

Direct sow

Jun 21

🌾

Projected first harvest

Sep 29

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 2a (approximate)

Most sweet potatoes mature in about 100 days.

Sweet Potatoes planting calendar for Alaska, Zone 2b

Average last spring frost

May 30

Average first fall frost

September 6

🌿

Direct sow

Jun 27

🌾

Projected first harvest

Oct 5

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 2b (approximate)

Most sweet potatoes mature in about 100 days.

Sweet Potatoes planting calendar for Alaska, Zone 3a

Average last spring frost

May 30

Average first fall frost

September 10

🌿

Direct sow

Jun 27

🌾

Projected first harvest

Oct 5

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 3a (approximate)

Most sweet potatoes mature in about 100 days. Full zone 3 guide (both 3a and 3b) →

Sweet Potatoes planting calendar for Alaska, Zone 3b

Average last spring frost

May 20

Average first fall frost

September 15

🌿

Direct sow

Jun 17

🌾

Projected first harvest

Sep 25

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 3b (approximate)

Most sweet potatoes mature in about 100 days. Full zone 3 guide (both 3a and 3b) →

Sweet Potatoes planting calendar for Alaska, Zone 4a

Average last spring frost

May 15

Average first fall frost

September 20

🌿

Direct sow

Jun 12

🌾

Projected first harvest

Sep 20

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 4a (approximate)

Most sweet potatoes mature in about 100 days. Full zone 4 guide (both 4a and 4b) →

Sweet Potatoes planting calendar for Alaska, Zone 4b

Average last spring frost

May 10

Average first fall frost

September 25

🌿

Direct sow

Jun 7

🌾

Projected first harvest

Sep 15

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 4b (approximate)

Most sweet potatoes mature in about 100 days. Full zone 4 guide (both 4a and 4b) →

Sweet Potatoes planting calendar for Alaska, Zone 5a

Average last spring frost

May 5

Average first fall frost

October 1

🌿

Direct sow

Jun 2

🌾

Projected first harvest

Sep 10

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 5a (approximate)

Most sweet potatoes mature in about 100 days. Full zone 5 guide (both 5a and 5b) →

Sweet Potatoes planting calendar for Alaska, Zone 5b

Average last spring frost

April 30

Average first fall frost

October 5

🌿

Direct sow

May 28

🌾

Projected first harvest

Sep 5

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 5b (approximate)

Most sweet potatoes mature in about 100 days. Full zone 5 guide (both 5a and 5b) →

Sweet Potatoes planting calendar for Alaska, Zone 6a

Average last spring frost

April 25

Average first fall frost

October 10

🌿

Direct sow

May 23

🌾

Projected first harvest

Aug 31

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 6a (approximate)

Most sweet potatoes mature in about 100 days. Full zone 6 guide (both 6a and 6b) →

Sweet Potatoes planting calendar for Alaska, Zone 6b

Average last spring frost

April 20

Average first fall frost

October 15

🌿

Direct sow

May 18

🌾

Projected first harvest

Aug 26

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 6b (approximate)

Most sweet potatoes mature in about 100 days. Full zone 6 guide (both 6a and 6b) →

Sweet Potatoes planting calendar for Alaska, Zone 7a

Average last spring frost

April 15

Average first fall frost

October 20

🌿

Direct sow

May 13

🌾

Projected first harvest

Aug 21

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7a (approximate)

Most sweet potatoes mature in about 100 days. Full zone 7 guide (both 7a and 7b) →

Sweet Potatoes planting calendar for Alaska, Zone 7b

Average last spring frost

April 10

Average first fall frost

October 30

🌿

Direct sow

May 8

🌾

Projected first harvest

Aug 16

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7b (approximate)

Most sweet potatoes mature in about 100 days. Full zone 7 guide (both 7a and 7b) →

Sweet Potatoes planting calendar for Alaska, Zone 8a

Average last spring frost

April 1

Average first fall frost

November 10

🌿

Direct sow

Apr 29

🌾

Projected first harvest

Aug 7

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 8a (approximate)

Most sweet potatoes mature in about 100 days. Full zone 8 guide (both 8a and 8b) →

Sweet Potatoes planting calendar for Alaska, Zone 8b

Average last spring frost

March 20

Average first fall frost

November 20

🌿

Direct sow

Apr 17

🌾

Projected first harvest

Jul 26

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 8b (approximate)

Most sweet potatoes mature in about 100 days. Full zone 8 guide (both 8a and 8b) →

Not sure which half-zone you're in? Set your ZIP in HomeSown for dates tuned to your exact location.

Varieties to grow

2 varieties of sweet potatoes in the HomeSown library. Tap any for its full grow guide.

Beauregard Sweet Potato →Ornamental Sweet Potato Vine →

Common problems with sweet potatoes

What to watch for, with identification and treatment for each

Sweet Potato WeevilThree-Lined Potato BeetleColorado Potato BeetlePotato PsyllidTomato HornwormEuropean Corn BorerEarly BlightLate BlightSeptoria Leaf SpotCommon ScabBacterial WiltHollow Heart

🌱 Grow sweet potatoes with a calendar built for your exact yard

HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.

Start your free garden →

sweet potatoes — full zone guide

All zonesZone 3 →Zone 4 →Zone 5 →Zone 6 →Zone 7 →Zone 8 →