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When to Plant Comfrey in Alaska

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

Comfrey planting calendar for Alaska, Zone 1a

Average last spring frost

May 24

Average first fall frost

August 25

🌿

Direct sow

May 24

🌾

Projected first harvest

Jul 23

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

Comfrey is ready to harvest in about 60 days.

Comfrey planting calendar for Alaska, Zone 1b

Average last spring frost

May 29

Average first fall frost

August 28

🌿

Direct sow

May 29

🌾

Projected first harvest

Jul 28

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

Comfrey is ready to harvest in about 60 days.

Comfrey planting calendar for Alaska, Zone 2a

Average last spring frost

May 24

Average first fall frost

September 5

🌿

Direct sow

May 24

🌾

Projected first harvest

Jul 23

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

Comfrey is ready to harvest in about 60 days.

Comfrey planting calendar for Alaska, Zone 2b

Average last spring frost

May 30

Average first fall frost

September 6

🌿

Direct sow

May 30

🌾

Projected first harvest

Jul 29

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

Comfrey is ready to harvest in about 60 days.

Comfrey planting calendar for Alaska, Zone 3a

Average last spring frost

May 30

Average first fall frost

September 10

🌿

Direct sow

May 30

🌾

Projected first harvest

Jul 29

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

Comfrey is ready to harvest in about 60 days. Full zone 3 guide (both 3a and 3b) →

Comfrey planting calendar for Alaska, Zone 3b

Average last spring frost

May 20

Average first fall frost

September 15

🌿

Direct sow

May 20

🌾

Projected first harvest

Jul 19

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

Comfrey is ready to harvest in about 60 days. Full zone 3 guide (both 3a and 3b) →

Comfrey planting calendar for Alaska, Zone 4a

Average last spring frost

May 15

Average first fall frost

September 20

🌿

Direct sow

May 15

🌾

Projected first harvest

Jul 14

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

Comfrey is ready to harvest in about 60 days. Full zone 4 guide (both 4a and 4b) →

Comfrey planting calendar for Alaska, Zone 4b

Average last spring frost

May 10

Average first fall frost

September 25

🌿

Direct sow

May 10

🌾

Projected first harvest

Jul 9

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

Comfrey is ready to harvest in about 60 days. Full zone 4 guide (both 4a and 4b) →

Comfrey planting calendar for Alaska, Zone 5a

Average last spring frost

May 5

Average first fall frost

October 1

🌿

Direct sow

May 5

🌾

Projected first harvest

Jul 4

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

Comfrey is ready to harvest in about 60 days. Full zone 5 guide (both 5a and 5b) →

Comfrey planting calendar for Alaska, Zone 5b

Average last spring frost

April 30

Average first fall frost

October 5

🌿

Direct sow

Apr 30

🌾

Projected first harvest

Jun 29

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

Comfrey is ready to harvest in about 60 days. Full zone 5 guide (both 5a and 5b) →

Comfrey planting calendar for Alaska, Zone 6a

Average last spring frost

April 25

Average first fall frost

October 10

🌿

Direct sow

Apr 25

🌾

Projected first harvest

Jun 24

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

Comfrey is ready to harvest in about 60 days. Full zone 6 guide (both 6a and 6b) →

Comfrey planting calendar for Alaska, Zone 6b

Average last spring frost

April 20

Average first fall frost

October 15

🌿

Direct sow

Apr 20

🌾

Projected first harvest

Jun 19

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

Comfrey is ready to harvest in about 60 days. Full zone 6 guide (both 6a and 6b) →

Comfrey planting calendar for Alaska, Zone 7a

Average last spring frost

April 15

Average first fall frost

October 20

🌿

Direct sow

Apr 15

🌾

Projected first harvest

Jun 14

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

Comfrey is ready to harvest in about 60 days. Full zone 7 guide (both 7a and 7b) →

Comfrey planting calendar for Alaska, Zone 7b

Average last spring frost

April 10

Average first fall frost

October 30

🌿

Direct sow

Apr 10

🌾

Projected first harvest

Jun 9

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

Comfrey is ready to harvest in about 60 days. Full zone 7 guide (both 7a and 7b) →

Comfrey planting calendar for Alaska, Zone 8a

Average last spring frost

April 1

Average first fall frost

November 10

🌿

Direct sow

Apr 1

🌾

Projected first harvest

May 31

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

Comfrey is ready to harvest in about 60 days. Full zone 8 guide (both 8a and 8b) →

Comfrey planting calendar for Alaska, Zone 8b

Average last spring frost

March 20

Average first fall frost

November 20

🌿

Direct sow

Mar 20

🌾

Projected first harvest

May 19

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

Comfrey is ready to harvest in about 60 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

1 variety of comfrey in the HomeSown library. Tap any for its full grow guide.

Bocking 14 Comfrey →

Common problems with comfrey

What to watch for, with identification and treatment for each

Four-Lined Plant BugCommon Stalk BorerGroundhogsAntsAphidsArmywormsAnthracnoseDamping-OffFrost & Cold InjuryGray MoldHerbicide InjuryMosaic Virus

🌱 Grow comfrey 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.

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comfrey — full zone guide

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