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Growing Arugula in Ottawa

🇨🇦 Zone 1 Planting Guide · Warm-summer humid continental climate

USDA Zone 1 165 frost-free days 21-40 days to harvest

Quick Answer: Growing Arugula in Ottawa

Yes, you can grow Arugula in Ottawa, CA! Plant during Mar, Apr, May, Jul, Aug for best results. Ottawa is in USDA Zone 1 with a Warm-summer humid continental climate, offering 165 frost-free days per year. The difficulty level is easy, and Arugula takes 21-40 days to harvest. Arugula needs full sun to partial shade and regular watering.

Climate Match Analysis

Moderate Match Ottawa + Arugula

Ottawa's climate requires careful timing. Winter lows (-15°C) drop below Arugula's minimum (2°C), so avoid cold months. Summer highs (27°C) exceed Arugula's maximum (24°C), so plant early or provide shade. Follow the recommended planting months for success.

Arugula tolerates 2°C to 24°C
Optimal: 10°C - 18°C
Ottawa range -15°C to 27°C

Ottawa Climate Data

USDA Zone
1
Frost-Free
165days
Winter Low
-15°C
Summer High
27°C
Rainfall
920mm/yr
Climate
Dfb
Warm-summer humid continental

Arugula Planting Calendar for Ottawa

Green months show the best time to plant Arugula in Ottawa

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Arugula Not recommended

Arugula Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

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Water

Regular

Consistent moisture, 1-2 inches/week

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Days to Harvest

21-40

From planting to first harvest

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Difficulty

easy

Great for beginners

💡 Growing Tips for Arugula

Sow every 2-3 weeks for continuous harvest. Bolts quickly in heat. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Arugula is frost tolerant — you can plant earlier in spring.

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Grow Arugula Indoors

No garden? Learn how to grow Arugula indoors with our complete guide

How to Grow Arugula in Ottawa

Ottawa, CA is in USDA Hardiness Zone 1 with a Warm-summer humid continental climate (Köppen Dfb). With winter lows of -15°C and summer highs of 27°C, the growing season spans approximately 165 frost-free days. Arugula is one of the easiest plants to grow in this climate.

Arugula thrives in temperatures between 10°C and 18°C, requiring full sun to partial shade and regular watering. In Ottawa, the best months to plant Arugula are March, April, May, July, August. Since Arugula can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 21-40 days after planting.

With 920mm of annual rainfall, Ottawa provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in Ottawa

More plants you can grow alongside Arugula in Ottawa

Keep Exploring

Frequently Asked Questions

Can I grow arugula in Ottawa?

Yes! Arugula can be successfully grown in Ottawa, CA. Ottawa is in USDA Hardiness Zone 1 with a Warm-summer humid continental climate. The difficulty level for growing Arugula here is rated "easy". The best months to plant are March, April, May, July, August.

When should I plant arugula in Ottawa?

In Ottawa, the recommended planting months for Arugula are March, April, May, July, August. Ottawa has 165 frost-free days per year, with winter lows of -15°C and summer highs of 27°C. Arugula is frost tolerant, giving you more flexibility with planting dates.

How long does arugula take to grow in Ottawa?

Arugula typically takes 21-40 days from planting to harvest. In Ottawa's Warm-summer humid continental climate with 165 frost-free days, you have enough time with good planning to grow Arugula to maturity. Sow every 2-3 weeks for continuous harvest. Bolts quickly in heat. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Can I grow arugula indoors in Ottawa?

Arugula can potentially be grown indoors in Ottawa with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Mar, Apr, May, Jul, Aug outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant arugula in Ottawa?

Plant Arugula in Ottawa during March, April, May, July, August. These are the optimal months based on Ottawa's USDA Zone 1 climate, 165 frost-free days, and temperature range of -15°C to 27°C.

Is arugula hard to grow in Ottawa?

Arugula is rated "easy" to grow in Ottawa. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Arugula in Ottawa is Moderate.

What grows well with arugula in Ottawa?

In Ottawa, you can grow many companion plants alongside Arugula. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Ottawa's Zone 1 climate.

Does arugula need full sun in Ottawa?

Arugula requires full sun to partial shade. Arugula tolerates lower light. In Ottawa, a spot with filtered or indirect light for 2-4 hours works well.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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