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When to Plant Spinach in Alaska

Alaska spans USDA hardiness 1a to 8b (zones 1a to 8b on this page). Plant spinach 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

Spinach planting calendar for Alaska, Zone 1a

Average last spring frost

May 24

Average first fall frost

August 25

spring planting

🌱

Start seeds indoors

Mar 22

🌿

Transplant outdoors

Apr 26

🌾

Projected first harvest

Jun 7

fall planting

🌿

Direct sow

Jul 21

🌾

Projected first harvest

Sep 1

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 1a (approximate)

Most spinach mature in about 41 to 45 days depending on the variety.

Spinach planting calendar for Alaska, Zone 1b

Average last spring frost

May 29

Average first fall frost

August 28

spring planting

🌱

Start seeds indoors

Mar 27

🌿

Transplant outdoors

May 1

🌾

Projected first harvest

Jun 12

fall planting

🌿

Direct sow

Jul 24

🌾

Projected first harvest

Sep 4

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 1b (approximate)

Most spinach mature in about 41 to 45 days depending on the variety.

Spinach planting calendar for Alaska, Zone 2a

Average last spring frost

May 24

Average first fall frost

September 5

spring planting

🌱

Start seeds indoors

Mar 22

🌿

Transplant outdoors

Apr 26

🌾

Projected first harvest

Jun 7

fall planting

🌿

Direct sow

Aug 1

🌾

Projected first harvest

Sep 12

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 2a (approximate)

Most spinach mature in about 41 to 45 days depending on the variety.

Spinach planting calendar for Alaska, Zone 2b

Average last spring frost

May 30

Average first fall frost

September 6

spring planting

🌱

Start seeds indoors

Mar 28

🌿

Transplant outdoors

May 2

🌾

Projected first harvest

Jun 13

fall planting

🌿

Direct sow

Aug 2

🌾

Projected first harvest

Sep 13

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 2b (approximate)

Most spinach mature in about 41 to 45 days depending on the variety.

Spinach planting calendar for Alaska, Zone 3a

Average last spring frost

May 30

Average first fall frost

September 10

spring planting

🌱

Start seeds indoors

Mar 28

🌿

Transplant outdoors

May 2

🌾

Projected first harvest

Jun 13

fall planting

🌿

Direct sow

Aug 6

🌾

Projected first harvest

Sep 17

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 3a (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 3 guide (both 3a and 3b) →

Spinach planting calendar for Alaska, Zone 3b

Average last spring frost

May 20

Average first fall frost

September 15

spring planting

🌱

Start seeds indoors

Mar 18

🌿

Transplant outdoors

Apr 22

🌾

Projected first harvest

Jun 3

fall planting

🌿

Direct sow

Aug 11

🌾

Projected first harvest

Sep 22

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 3b (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 3 guide (both 3a and 3b) →

Spinach planting calendar for Alaska, Zone 4a

Average last spring frost

May 15

Average first fall frost

September 20

spring planting

🌱

Start seeds indoors

Mar 13

🌿

Transplant outdoors

Apr 17

🌾

Projected first harvest

May 29

fall planting

🌿

Direct sow

Aug 16

🌾

Projected first harvest

Sep 27

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 4a (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 4 guide (both 4a and 4b) →

Spinach planting calendar for Alaska, Zone 4b

Average last spring frost

May 10

Average first fall frost

September 25

spring planting

🌱

Start seeds indoors

Mar 8

🌿

Transplant outdoors

Apr 12

🌾

Projected first harvest

May 24

fall planting

🌿

Direct sow

Aug 21

🌾

Projected first harvest

Oct 2

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 4b (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 4 guide (both 4a and 4b) →

Spinach planting calendar for Alaska, Zone 5a

Average last spring frost

May 5

Average first fall frost

October 1

spring planting

🌱

Start seeds indoors

Mar 3

🌿

Transplant outdoors

Apr 7

🌾

Projected first harvest

May 19

fall planting

🌿

Direct sow

Aug 27

🌾

Projected first harvest

Oct 8

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 5a (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 5 guide (both 5a and 5b) →

Spinach planting calendar for Alaska, Zone 5b

Average last spring frost

April 30

Average first fall frost

October 5

spring planting

🌱

Start seeds indoors

Feb 26

🌿

Transplant outdoors

Apr 2

🌾

Projected first harvest

May 14

fall planting

🌿

Direct sow

Aug 31

🌾

Projected first harvest

Oct 12

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 5b (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 5 guide (both 5a and 5b) →

Spinach planting calendar for Alaska, Zone 6a

Average last spring frost

April 25

Average first fall frost

October 10

spring planting

🌱

Start seeds indoors

Feb 21

🌿

Transplant outdoors

Mar 28

🌾

Projected first harvest

May 9

fall planting

🌿

Direct sow

Sep 5

🌾

Projected first harvest

Oct 17

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 6a (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 6 guide (both 6a and 6b) →

Spinach planting calendar for Alaska, Zone 6b

Average last spring frost

April 20

Average first fall frost

October 15

spring planting

🌱

Start seeds indoors

Feb 16

🌿

Transplant outdoors

Mar 23

🌾

Projected first harvest

May 4

fall planting

🌿

Direct sow

Sep 10

🌾

Projected first harvest

Oct 22

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 6b (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 6 guide (both 6a and 6b) →

Spinach planting calendar for Alaska, Zone 7a

Average last spring frost

April 15

Average first fall frost

October 20

spring planting

🌱

Start seeds indoors

Feb 11

🌿

Transplant outdoors

Mar 18

🌾

Projected first harvest

Apr 29

fall planting

🌿

Direct sow

Sep 15

🌾

Projected first harvest

Oct 27

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7a (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 7 guide (both 7a and 7b) →

Spinach planting calendar for Alaska, Zone 7b

Average last spring frost

April 10

Average first fall frost

October 30

spring planting

🌱

Start seeds indoors

Feb 6

🌿

Transplant outdoors

Mar 13

🌾

Projected first harvest

Apr 24

fall planting

🌿

Direct sow

Sep 25

🌾

Projected first harvest

Nov 6

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7b (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 7 guide (both 7a and 7b) →

Spinach planting calendar for Alaska, Zone 8a

Average last spring frost

April 1

Average first fall frost

November 10

spring planting

🌱

Start seeds indoors

Jan 28

🌿

Transplant outdoors

Mar 4

🌾

Projected first harvest

Apr 15

fall planting

🌿

Direct sow

Oct 6

🌾

Projected first harvest

Nov 17

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 8a (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. Full zone 8 guide (both 8a and 8b) →

Spinach planting calendar for Alaska, Zone 8b

Average last spring frost

March 20

Average first fall frost

November 20

spring planting

🌱

Start seeds indoors

Jan 16

🌿

Transplant outdoors

Feb 20

🌾

Projected first harvest

Apr 3

fall planting

🌿

Direct sow

Oct 16

🌾

Projected first harvest

Nov 27

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 8b (approximate)

Most spinach mature in about 41 to 45 days depending on the variety. 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

3 varieties of spinach in the HomeSown library. Tap any for its full grow guide.

Bloomsdale Spinach →Space Spinach →Tyee Spinach →

Common problems with spinach

What to watch for, with identification and treatment for each

Seed Corn MaggotSeedcorn MaggotCabbage LooperFlea BeetlesBlister BeetlesGroundhogsBottom RotTip BurnBoltingBacterial Soft RotFusarium WiltAster Yellows

🌱 Grow spinach 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 →

spinach — full zone guide

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