When should I plant Rhubarb in Zone 10b?

Start Rhubarb seeds indoors around Nov 19. Transplant outdoors after Dec 31. Expect first harvest around Dec 31.

What is the last frost date for Zone 10b?

The average last spring frost date for Zone 10b is Jan 28. The first fall frost averages Dec 22, giving a 328-day growing season.

Can I grow Rhubarb in Zone 10b?

Yes. Rhubarb needs 90 days to harvest. Zone 10b has a 328-day growing season, which is sufficient.

Growing Rhubarb in Zone 10b

Zone 10b has a year-round growing season. Rhubarb can be planted almost any time with proper planning. Viimeinen halla: Jan 28. Ensimmäinen halla: Dec 22.

Planting Calendar

Indoor

Outdoor

Harvest

Nov 19Dec 22

Season: Jan 28 – Dec 22 (328 päivää)

Vyöhyke10b

Viimeinen hallaJan 28

Ensimmäinen hallaDec 22

Kausi328 päivää

Sato90 päivää

AurinkoTäysi Aurinko

When to Plant Rhubarb in Zone 10b

Start Seeds Indoors: Nov 19

Start Rhubarb seeds indoors around Nov 19 (10 viikkoa ennen viimeistä hallaa). Optimal germination temperature: 65F. Germinates in 7-21 days.

Transplant Outdoors: Dec 31

Transplant Rhubarb seedlings outdoors after Dec 31. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm välein). Harden off plants for a week before moving outside.

Harvest: Dec 31

First harvest approximately Dec 31 (~365 päivää from transplant). Continue harvesting until first frost (Dec 22). Rhubarb can overwinter in mild climates for continued harvest.

Rhubarb in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

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