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When to Plant Brussels Sprouts in California

California spans USDA hardiness 5b to 11a (zones 5b to 11a on this page). Plant brussels sprouts by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.

Jump to: Zone 5b · Zone 6a · Zone 6b · Zone 7a · Zone 7b · Zone 8a · Zone 8b · Zone 9a · Zone 9b · Zone 10a · Zone 10b · Zone 11a

Brussels Sprouts planting calendar for California, Zone 5b

Average last spring frost

April 30

Average first fall frost

October 5

spring planting

🌱

Start seeds indoors

Mar 12

🌿

Transplant outdoors

Apr 16

🌾

Projected first harvest

Jul 25

fall planting

🌱

Start seeds indoors

Jun 1

🌿

Transplant outdoors

Jul 6

🌾

Projected first harvest

Oct 14

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spring planting

fall planting

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

Brussels Sprouts is ready to harvest in about 100 days. Full zone 5 guide (both 5a and 5b) →

Brussels Sprouts planting calendar for California, Zone 6a

Average last spring frost

April 25

Average first fall frost

October 10

spring planting

🌱

Start seeds indoors

Mar 7

🌿

Transplant outdoors

Apr 11

🌾

Projected first harvest

Jul 20

fall planting

🌱

Start seeds indoors

Jun 6

🌿

Transplant outdoors

Jul 11

🌾

Projected first harvest

Oct 19

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spring planting

fall planting

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

Brussels Sprouts is ready to harvest in about 100 days. Full zone 6 guide (both 6a and 6b) →

Brussels Sprouts planting calendar for California, Zone 6b

Average last spring frost

April 20

Average first fall frost

October 15

spring planting

🌱

Start seeds indoors

Mar 2

🌿

Transplant outdoors

Apr 6

🌾

Projected first harvest

Jul 15

fall planting

🌱

Start seeds indoors

Jun 11

🌿

Transplant outdoors

Jul 16

🌾

Projected first harvest

Oct 24

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spring planting

fall planting

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

Brussels Sprouts is ready to harvest in about 100 days. Full zone 6 guide (both 6a and 6b) →

Brussels Sprouts planting calendar for California, Zone 7a

Average last spring frost

April 15

Average first fall frost

October 20

spring planting

🌱

Start seeds indoors

Feb 25

🌿

Transplant outdoors

Apr 1

🌾

Projected first harvest

Jul 10

fall planting

🌱

Start seeds indoors

Jun 16

🌿

Transplant outdoors

Jul 21

🌾

Projected first harvest

Oct 29

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spring planting

fall planting

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

Brussels Sprouts is ready to harvest in about 100 days. Full zone 7 guide (both 7a and 7b) →

Brussels Sprouts planting calendar for California, Zone 7b

Average last spring frost

April 10

Average first fall frost

October 30

spring planting

🌱

Start seeds indoors

Feb 20

🌿

Transplant outdoors

Mar 27

🌾

Projected first harvest

Jul 5

fall planting

🌱

Start seeds indoors

Jun 26

🌿

Transplant outdoors

Jul 31

🌾

Projected first harvest

Nov 8

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spring planting

fall planting

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

Brussels Sprouts is ready to harvest in about 100 days. Full zone 7 guide (both 7a and 7b) →

Brussels Sprouts planting calendar for California, Zone 8a

Average last spring frost

April 1

Average first fall frost

November 10

spring planting

🌱

Start seeds indoors

Feb 11

🌿

Transplant outdoors

Mar 18

🌾

Projected first harvest

Jun 26

fall planting

🌱

Start seeds indoors

Jul 7

🌿

Transplant outdoors

Aug 11

🌾

Projected first harvest

Nov 19

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spring planting

fall planting

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

Brussels Sprouts is ready to harvest in about 100 days. Full zone 8 guide (both 8a and 8b) →

Brussels Sprouts planting calendar for California, Zone 8b

Average last spring frost

March 20

Average first fall frost

November 20

spring planting

🌱

Start seeds indoors

Jan 30

🌿

Transplant outdoors

Mar 6

🌾

Projected first harvest

Jun 14

fall planting

🌱

Start seeds indoors

Jul 17

🌿

Transplant outdoors

Aug 21

🌾

Projected first harvest

Nov 29

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F
M
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spring planting

fall planting

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

Brussels Sprouts is ready to harvest in about 100 days. Full zone 8 guide (both 8a and 8b) →

Brussels Sprouts planting calendar for California, Zone 9a

Average last spring frost

March 1

Average first fall frost

December 1

spring planting

🌱

Start seeds indoors

Jan 11

🌿

Transplant outdoors

Feb 15

🌾

Projected first harvest

May 26

fall planting

🌱

Start seeds indoors

Jul 28

🌿

Transplant outdoors

Sep 1

🌾

Projected first harvest

Dec 10

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spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 9a (approximate)

Brussels Sprouts is ready to harvest in about 100 days. Full zone 9 guide (both 9a and 9b) →

Brussels Sprouts planting calendar for California, Zone 9b

Average last spring frost

February 15

Average first fall frost

December 15

spring planting

🌱

Start seeds indoors

Dec 28

🌿

Transplant outdoors

Feb 1

🌾

Projected first harvest

May 12

fall planting

🌱

Start seeds indoors

Aug 11

🌿

Transplant outdoors

Sep 15

🌾

Projected first harvest

Dec 24

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F
M
A
M
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J
A
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O
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D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 9b (approximate)

Brussels Sprouts is ready to harvest in about 100 days. Full zone 9 guide (both 9a and 9b) →

Brussels Sprouts planting calendar for California, Zone 10a

Average last spring frost

January 30

Average first fall frost

December 30

spring planting

🌱

Start seeds indoors

Dec 12

🌿

Transplant outdoors

Jan 16

🌾

Projected first harvest

Apr 26

fall planting

🌱

Start seeds indoors

Aug 26

🌿

Transplant outdoors

Sep 30

🌾

Projected first harvest

Jan 8

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F
M
A
M
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J
A
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O
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D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 10a (approximate)

Brussels Sprouts is ready to harvest in about 100 days. Full zone 10 guide (both 10a and 10b) →

Brussels Sprouts planting calendar for California, Zone 10b

Average last spring frost

January 30

Average first fall frost

December 30

spring planting

🌱

Start seeds indoors

Dec 12

🌿

Transplant outdoors

Jan 16

🌾

Projected first harvest

Apr 26

fall planting

🌱

Start seeds indoors

Aug 26

🌿

Transplant outdoors

Sep 30

🌾

Projected first harvest

Jan 8

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

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 10b (approximate)

Brussels Sprouts is ready to harvest in about 100 days. Full zone 10 guide (both 10a and 10b) →

Brussels Sprouts planting calendar for California, Zone 11a

Zone 11a doesn't get a seasonal frost — brussels sprouts plants on a warm/cool-season calendar instead of frost dates.

🗓️

Best planting window

Cool season (≈ Sep–Feb)

🌾

Time to harvest

~100 days

🌴 Your zone never frosts, so planting is timed to the cooler vs. warmer seasons rather than a frost date.

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🌿 Planting windowTodayZone 11a: frost-free; timed to seasons, not frost

Brussels Sprouts is ready to harvest in about 100 days.

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

Brussels Sprouts →

Common problems with brussels sprouts

What to watch for, with identification and treatment for each

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

🌱 Grow brussels sprouts 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 →

brussels sprouts — full zone guide

All zonesZone 5 →Zone 6 →Zone 7 →Zone 8 →Zone 9 →Zone 10 →