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🥬 Growing Lettuce in Zone 12b

Zone 12b has a year-round growing season. Lettuce can be planted almost any time with proper planning. Last frost: Jan 1. First frost: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Nov 20Dec 31

Season: Jan 1 – Dec 31 (364 days) · Succession: plant every 2 weeks (up to 22x)

Zone12b

Last FrostJan 1

First FrostDec 31

Season Length364 days

Days to Harvest45

SunPart Sun / Part Shade

Frost ToleranceLight

Spacing4/sqft (6" apart)

When to Plant Lettuce in Zone 12b

Start Seeds Indoors: Nov 20

Start Lettuce seeds indoors around Nov 20 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 4–10 days.

Transplant Outdoors: Dec 11

Transplant Lettuce seedlings outdoors after Dec 11. Wait until soil temperature reaches 40°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Jan 15

First harvest approximately Jan 15 (~35 days from transplant). Continue harvesting until first frost (Dec 31).

Fall Planting: Nov 5

For a fall harvest, plant Lettuce around Nov 5 (8 weeks before first frost).

Companion Planting

✅ Strawberries✅ Carrots✅ Beets✅ Cucumbers✅ Radishes

Lettuce 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

Frequently Asked Questions

When should I plant Lettuce in Zone 12b?

Start Lettuce seeds indoors around Nov 20. Transplant outdoors after Dec 11. Expect first harvest around Jan 15.

What is the last frost date for Zone 12b?

The average last spring frost date for Zone 12b is Jan 1. The first fall frost averages Dec 31, giving a 364-day growing season.

Can I grow Lettuce in Zone 12b?

Yes. Lettuce needs 45 days to harvest. Zone 12b has a 364-day growing season, which is sufficient. You can plant up to 22 successions.

What is the best month to plant Lettuce in Zone 12b?

The best time to start Lettuce in Zone 12b is Nov. Begin seeds indoors around Nov 20, then transplant outdoors after the last frost date of Jan 1.

What companion plants grow well with Lettuce?

Good companion plants for Lettuce include Strawberries, Carrots, Beets, Cucumbers, Radishes.

How long does Lettuce take to harvest?

Lettuce takes approximately 45 days from planting to harvest. In Zone 12b, expect your first harvest around Jan 15.

Plan Your Lettuce Garden

Track Lettuce from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Lettuce Growing Guide