When should I plant Rhubarb in Zone 13a?

Start Rhubarb seeds indoors around Oct 23. Transplant outdoors after Dec 4. Expect first harvest around Dec 4.

What is the last frost date for Zone 13a?

The average last spring frost date for Zone 13a is Jan 1. The first fall frost averages Dec 31, giving a 364-day growing season.

Can I grow Rhubarb in Zone 13a?

Yes. Rhubarb needs 90 days to harvest. Zone 13a has a 364-day growing season, which is sufficient.

Growing Rhubarb in Zone 13a

Zone 13a has a year-round growing season. Rhubarb can be planted almost any time with proper planning. Siste frost: Jan 1. Første frost: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Oct 23Dec 31

Season: Jan 1 – Dec 31 (364 dager)

Sone13a

Siste frostJan 1

Første frostDec 31

Sesong364 dager

Høst90 dager

SolFull Sol

When to Plant Rhubarb in Zone 13a

Start Seeds Indoors: Oct 23

Start Rhubarb seeds indoors around Oct 23 (10 uker før siste frost). Optimal germination temperature: 65F. Germinates in 7-21 days.

Transplant Outdoors: Dec 4

Transplant Rhubarb seedlings outdoors after Dec 4. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm avstand). Harden off plants for a week before moving outside.

Harvest: Dec 4

First harvest approximately Dec 4 (~365 dager from transplant). Continue harvesting until first frost (Dec 31). 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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