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When to Plant Scarlet Runner Bean in California

California spans USDA hardiness 5b to 11a (zones 5b to 11a on this page). Plant scarlet runner bean 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

Scarlet Runner Bean planting calendar for California, Zone 5b

Average last spring frost

April 30

Average first fall frost

October 5

🌿

Direct sow

May 7

🌾

Projected first harvest

Jul 11

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 5 guide (both 5a and 5b) →

Scarlet Runner Bean planting calendar for California, Zone 6a

Average last spring frost

April 25

Average first fall frost

October 10

🌿

Direct sow

May 2

🌾

Projected first harvest

Jul 6

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 6 guide (both 6a and 6b) →

Scarlet Runner Bean planting calendar for California, Zone 6b

Average last spring frost

April 20

Average first fall frost

October 15

🌿

Direct sow

Apr 27

🌾

Projected first harvest

Jul 1

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 6 guide (both 6a and 6b) →

Scarlet Runner Bean planting calendar for California, Zone 7a

Average last spring frost

April 15

Average first fall frost

October 20

🌿

Direct sow

Apr 22

🌾

Projected first harvest

Jun 26

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 7 guide (both 7a and 7b) →

Scarlet Runner Bean planting calendar for California, Zone 7b

Average last spring frost

April 10

Average first fall frost

October 30

🌿

Direct sow

Apr 17

🌾

Projected first harvest

Jun 21

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 7 guide (both 7a and 7b) →

Scarlet Runner Bean planting calendar for California, Zone 8a

Average last spring frost

April 1

Average first fall frost

November 10

🌿

Direct sow

Apr 8

🌾

Projected first harvest

Jun 12

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 8 guide (both 8a and 8b) →

Scarlet Runner Bean planting calendar for California, Zone 8b

Average last spring frost

March 20

Average first fall frost

November 20

🌿

Direct sow

Mar 27

🌾

Projected first harvest

May 31

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 8 guide (both 8a and 8b) →

Scarlet Runner Bean planting calendar for California, Zone 9a

Average last spring frost

March 1

Average first fall frost

December 1

🌿

Direct sow

Mar 8

🌾

Projected first harvest

May 12

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 9 guide (both 9a and 9b) →

Scarlet Runner Bean planting calendar for California, Zone 9b

Average last spring frost

February 15

Average first fall frost

December 15

🌿

Direct sow

Feb 22

🌾

Projected first harvest

Apr 28

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

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 9 guide (both 9a and 9b) →

Scarlet Runner Bean planting calendar for California, Zone 10a

Average last spring frost

January 30

Average first fall frost

December 30

🌿

Direct sow

Feb 6

🌾

Projected first harvest

Apr 12

J
F
M
A
M
J
J
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🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 10a (approximate)

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 10 guide (both 10a and 10b) →

Scarlet Runner Bean planting calendar for California, Zone 10b

Average last spring frost

January 30

Average first fall frost

December 30

🌿

Direct sow

Feb 6

🌾

Projected first harvest

Apr 12

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F
M
A
M
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J
A
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🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 10b (approximate)

Scarlet Runner Bean is ready to harvest in about 65 days. Full zone 10 guide (both 10a and 10b) →

Scarlet Runner Bean planting calendar for California, Zone 11a

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

🗓️

Best planting window

Cool season (≈ Sep–Feb)

🌾

Time to harvest

~65 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

Scarlet Runner Bean is ready to harvest in about 65 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 scarlet runner bean in the HomeSown library. Tap any for its full grow guide.

Scarlet Runner Bean →

Common problems with scarlet runner bean

What to watch for, with identification and treatment for each

Mexican Bean BeetleBean Leaf BeetleCowpea CurculioPea MothSeed Corn MaggotEuropean Corn BorerAngular Leaf SpotBlossom DropCharcoal RotBacterial Soft RotFusarium WiltTomato Spotted Wilt Virus

🌱 Grow scarlet runner bean with a calendar built for your exact yard

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scarlet runner bean — full zone guide

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