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Growing Mint in Ottawa

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

USDA Zone 1 165 frost-free days 60-90 days to harvest

Quick Answer: Growing Mint in Ottawa

Yes, you can grow Mint 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 Mint takes 60-90 days to harvest. Mint needs partial shade ok and regular watering.

Climate Match Analysis

Moderate Match Ottawa + Mint

Ottawa's climate requires careful timing. Winter lows (-15°C) drop below Mint's minimum (-5°C), so avoid cold months. Follow the recommended planting months for success.

Mint tolerates -5°C to 30°C
Optimal: 12°C - 22°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

Mint Planting Calendar for Ottawa

Green months show the best time to plant Mint in Ottawa

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

Mint Growing Requirements

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Sunlight

Partial Shade OK

2-4 hours direct sunlight

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Water

Regular

Consistent moisture, 1-2 inches/week

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Days to Harvest

60-90

From planting to first harvest

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Difficulty

easy

Great for beginners

💡 Growing Tips for Mint

Always grow in a pot -- it will take over your garden. Harvest often to control growth. 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: Mint is frost tolerant — you can plant earlier in spring.

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Companion Plants for Mint

Find out which plants grow best alongside Mint — and which to keep apart

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Grow Mint Indoors

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

How to Grow Mint 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. Mint is one of the easiest plants to grow in this climate.

Mint thrives in temperatures between 12°C and 22°C, requiring partial shade ok and regular watering. In Ottawa, the best months to plant Mint are March, April, May, July, August. Since Mint can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 60-90 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 Mint in Ottawa

Keep Exploring

Frequently Asked Questions

Can I grow mint in Ottawa?

Yes! Mint 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 Mint here is rated "easy". The best months to plant are March, April, May, July, August.

When should I plant mint in Ottawa?

In Ottawa, the recommended planting months for Mint 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. Mint is frost tolerant, giving you more flexibility with planting dates.

How long does mint take to grow in Ottawa?

Mint typically takes 60-90 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 Mint to maturity. Always grow in a pot -- it will take over your garden. Harvest often to control growth. 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 mint indoors in Ottawa?

Mint can potentially be grown indoors in Ottawa with proper conditions. It requires partial shade ok (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 mint in Ottawa?

Plant Mint 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 mint hard to grow in Ottawa?

Mint 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 Mint in Ottawa is Moderate.

What grows well with mint in Ottawa?

In Ottawa, you can grow many companion plants alongside Mint. 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 mint need full sun in Ottawa?

Mint requires partial shade ok. Mint 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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