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🥗 Growing Arugula in Zone 9b

Zone 9b has warm winters and an extended growing season — excellent for heat-loving crops like Arugula. Last frost: Mar 10. First frost: Nov 15.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 10Nov 15

Season: Mar 10 – Nov 15 (250 days) · Succession: plant every 2 weeks (up to 15x)

Zone9b

Last FrostMar 10

First FrostNov 15

Season Length250 days

Days to Harvest35

SunPart Sun / Part Shade

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Arugula in Zone 9b

Start Seeds Indoors: Feb 10

Start Arugula seeds indoors around Feb 10 (4 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 3–7 days.

Transplant Outdoors: Feb 24

Transplant Arugula seedlings outdoors after Feb 24. Wait until soil temperature reaches 40°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Mar 31

First harvest approximately Mar 31 (~35 days from planting). Continue harvesting until first frost (Nov 15).

Fall Planting: Oct 11

For a fall harvest, plant Arugula around Oct 11 (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 9b?

Start Arugula seeds indoors around Feb 10. Transplant outdoors after Feb 24. Expect first harvest around Mar 31.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Can I grow Arugula in Zone 9b?

Yes. Arugula needs 35 days to harvest. Zone 9b has a 250-day growing season, which is sufficient. You can plant up to 15 successions.

What is the best month to plant Arugula in Zone 9b?

The best time to start Arugula in Zone 9b is Feb. Begin seeds indoors around Feb 10, then transplant outdoors after the last frost date of Mar 10.

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 9b, expect your first harvest around Mar 31.

Plan Your Arugula Garden

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

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