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🥗 Growing Arugula in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Arugula early indoors to maximize your harvest window. Last frost: May 15. First frost: Sep 22.

Planting Calendar

Indoor

Outdoor

Harvest

Apr 17Sep 22

Season: May 15 – Sep 22 (130 days) · Succession: plant every 2 weeks (up to 6x)

Zone3b

Last FrostMay 15

First FrostSep 22

Season Length130 days

Days to Harvest35

SunPart Sun / Part Shade

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Arugula in Zone 3b

Start Seeds Indoors: Apr 17

Start Arugula seeds indoors around Apr 17 (4 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 3–7 days.

Transplant Outdoors: May 1

Transplant Arugula seedlings outdoors after May 1. Wait until soil temperature reaches 40°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Jun 5

First harvest approximately Jun 5 (~35 days from planting). Continue harvesting until first frost (Sep 22).

Fall Planting: Aug 18

For a fall harvest, plant Arugula around Aug 18 (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 3b?

Start Arugula seeds indoors around Apr 17. Transplant outdoors after May 1. Expect first harvest around Jun 5.

What is the last frost date for Zone 3b?

The average last spring frost date for Zone 3b is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.

Can I grow Arugula in Zone 3b?

Yes. Arugula needs 35 days to harvest. Zone 3b has a 130-day growing season, which is sufficient. You can plant up to 6 successions.

What is the best month to plant Arugula in Zone 3b?

The best time to start Arugula in Zone 3b is Apr. Begin seeds indoors around Apr 17, then transplant outdoors after the last frost date of May 15.

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 3b, expect your first harvest around Jun 5.

Plan Your Arugula Garden

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

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