Explore LibraryStart free trial
← Plant Library

When to Plant Kale in Maine

Maine spans USDA hardiness 3b to 7a (zones 3b to 7a on this page). Plant kale by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.

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

Kale planting calendar for Maine, 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 16

fall planting

🌱

Start seeds indoors

Jun 23

🌿

Transplant outdoors

Jul 28

🌾

Projected first harvest

Sep 21

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

spring planting

fall planting

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

Most kale mature in about 55 to 60 days depending on the variety. Full zone 3 guide (both 3a and 3b) →

Kale planting calendar for Maine, 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

Jun 11

fall planting

🌱

Start seeds indoors

Jun 28

🌿

Transplant outdoors

Aug 2

🌾

Projected first harvest

Sep 26

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

spring planting

fall planting

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

Most kale mature in about 55 to 60 days depending on the variety. Full zone 4 guide (both 4a and 4b) →

Kale planting calendar for Maine, 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

Jun 6

fall planting

🌱

Start seeds indoors

Jul 3

🌿

Transplant outdoors

Aug 7

🌾

Projected first harvest

Oct 1

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

spring planting

fall planting

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

Most kale mature in about 55 to 60 days depending on the variety. Full zone 4 guide (both 4a and 4b) →

Kale planting calendar for Maine, 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

Jun 1

fall planting

🌱

Start seeds indoors

Jul 9

🌿

Transplant outdoors

Aug 13

🌾

Projected first harvest

Oct 7

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

spring planting

fall planting

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

Most kale mature in about 55 to 60 days depending on the variety. Full zone 5 guide (both 5a and 5b) →

Kale planting calendar for Maine, 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 27

fall planting

🌱

Start seeds indoors

Jul 13

🌿

Transplant outdoors

Aug 17

🌾

Projected first harvest

Oct 11

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

spring planting

fall planting

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

Most kale mature in about 55 to 60 days depending on the variety. Full zone 5 guide (both 5a and 5b) →

Kale planting calendar for Maine, 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 22

fall planting

🌱

Start seeds indoors

Jul 18

🌿

Transplant outdoors

Aug 22

🌾

Projected first harvest

Oct 16

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

spring planting

fall planting

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

Most kale mature in about 55 to 60 days depending on the variety. Full zone 6 guide (both 6a and 6b) →

Kale planting calendar for Maine, 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 17

fall planting

🌱

Start seeds indoors

Jul 23

🌿

Transplant outdoors

Aug 27

🌾

Projected first harvest

Oct 21

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

spring planting

fall planting

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

Most kale mature in about 55 to 60 days depending on the variety. Full zone 6 guide (both 6a and 6b) →

Kale planting calendar for Maine, 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

May 12

fall planting

🌱

Start seeds indoors

Jul 28

🌿

Transplant outdoors

Sep 1

🌾

Projected first harvest

Oct 26

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

spring planting

fall planting

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

Most kale mature in about 55 to 60 days depending on the variety. Full zone 7 guide (both 7a and 7b) →

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 kale in the HomeSown library. Tap any for its full grow guide.

Dwarf Blue Curled Vates Kale →Lacinato Kale →Redbor Kale →

Common problems with kale

What to watch for, with identification and treatment for each

Cabbage MaggotCabbage Root MaggotDiamondback MothHarlequin BugCabbage WormsCabbage LooperClubrootBlack RotTip BurnBoron DeficiencyBoltingBacterial Soft Rot

🌱 Grow kale 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 →

kale — full zone guide

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