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🥗 Growing Arugula in Zone 12a

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

Planting Calendar

Indoor

Outdoor

Harvest

Dec 4Dec 31

Season: Jan 1 – Dec 31 (364 days) · Succession: plant every 2 weeks (up to 23x)

Zone12a

Last FrostJan 1

First FrostDec 31

Season Length364 days

Days to Harvest35

SunPart Sun / Part Shade

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Arugula in Zone 12a

Start Seeds Indoors: Dec 4

Start Arugula seeds indoors around Dec 4 (4 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 3–7 days.

Transplant Outdoors: Dec 18

Transplant Arugula seedlings outdoors after Dec 18. 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 22

First harvest approximately Jan 22 (~35 days from planting). Continue harvesting until first frost (Dec 31).

Fall Planting: Nov 26

For a fall harvest, plant Arugula around Nov 26 (5 weeks before first frost).

Companion Planting

✅ Beans✅ Onions✅ Potatoes✅ Lettuce ✅ Dill✅ Beets✅ Carrots

❌ Strawberries

Arugula 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 Arugula in Zone 12a?

Start Arugula seeds indoors around Dec 4. Transplant outdoors after Dec 18. Expect first harvest around Jan 22.

What is the last frost date for Zone 12a?

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

Can I grow Arugula in Zone 12a?

Yes. Arugula needs 35 days to harvest. Zone 12a has a 364-day growing season, which is sufficient. You can plant up to 23 successions.

What is the best month to plant Arugula in Zone 12a?

The best time to start Arugula in Zone 12a is Dec. Begin seeds indoors around Dec 4, then transplant outdoors after the last frost date of Jan 1.

What companion plants grow well with Arugula?

Good companion plants for Arugula include Beans, Onions, Potatoes, Lettuce, Dill, Beets. Avoid planting Arugula near Strawberries.

How long does Arugula take to harvest?

Arugula takes approximately 35 days from planting to harvest. In Zone 12a, expect your first harvest around Jan 22.

Plan Your Arugula Garden

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

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