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🥬 Vegetable medium

Growing Leek in Spokane

🇺🇸 Zone 3 Planting Guide · Cold semi-arid climate

USDA Zone 3 155 frost-free days 90-120 days to harvest

Quick Answer: Growing Leek in Spokane

Yes, you can grow Leek in Spokane, US! Plant during Mar, Apr, May, Jul, Aug for best results. Spokane is in USDA Zone 3 with a Cold semi-arid climate, offering 155 frost-free days per year. The difficulty level is medium, and Leek takes 90-120 days to harvest. Leek needs full sun and regular watering.

Climate Match Analysis

Moderate Match Spokane + Leek

Spokane's climate requires careful timing. Winter lows (-8°C) drop below Leek's minimum (-5°C), so avoid cold months. Summer highs (30°C) exceed Leek's maximum (25°C), so plant early or provide shade. Follow the recommended planting months for success.

Leek tolerates -5°C to 25°C
Optimal: 10°C - 20°C
Spokane range -8°C to 30°C

Spokane Climate Data

USDA Zone
3
Frost-Free
155days
Winter Low
-8°C
Summer High
30°C
Rainfall
432mm/yr
Climate
BSk
Cold semi-arid

Leek Planting Calendar for Spokane

Green months show the best time to plant Leek in Spokane

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

Leek Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

90-120

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Leek

Plant in trenches and hill soil as they grow to blanch stems. Very cold hardy. 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: Leek is frost tolerant — you can plant earlier in spring.

How to Grow Leek in Spokane

Spokane, US is in USDA Hardiness Zone 3 with a Cold semi-arid climate (Köppen BSk). With winter lows of -8°C and summer highs of 30°C, the growing season spans approximately 155 frost-free days. Leek grows well with some gardening knowledge in this climate.

Leek thrives in temperatures between 10°C and 20°C, requiring full sun and regular watering. In Spokane, the best months to plant Leek are March, April, May, July, August. Since Leek can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 90-120 days after planting.

Spokane receives only 432mm of annual rainfall, so consistent irrigation will be essential for growing Leek successfully.

Other Plants That Grow in Spokane

More plants you can grow alongside Leek in Spokane

Keep Exploring

Frequently Asked Questions

Can I grow leek in Spokane?

Yes! Leek can be successfully grown in Spokane, US. Spokane is in USDA Hardiness Zone 3 with a Cold semi-arid climate. The difficulty level for growing Leek here is rated "medium". The best months to plant are March, April, May, July, August.

When should I plant leek in Spokane?

In Spokane, the recommended planting months for Leek are March, April, May, July, August. Spokane has 155 frost-free days per year, with winter lows of -8°C and summer highs of 30°C. Leek is frost tolerant, giving you more flexibility with planting dates.

How long does leek take to grow in Spokane?

Leek typically takes 90-120 days from planting to harvest. In Spokane's Cold semi-arid climate with 155 frost-free days, you have enough time with good planning to grow Leek to maturity. Plant in trenches and hill soil as they grow to blanch stems. Very cold hardy. 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 leek indoors in Spokane?

Leek can potentially be grown indoors in Spokane with proper conditions. It requires full sun (6+ hours of direct light — a south-facing window or grow lights recommended). 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 leek in Spokane?

Plant Leek in Spokane during March, April, May, July, August. These are the optimal months based on Spokane's USDA Zone 3 climate, 155 frost-free days, and temperature range of -8°C to 30°C.

Is leek hard to grow in Spokane?

Leek is rated "medium" to grow in Spokane. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Leek in Spokane is Moderate.

What grows well with leek in Spokane?

In Spokane, you can grow many companion plants alongside Leek. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Spokane's Zone 3 climate.

Does leek need full sun in Spokane?

Leek requires full sun. In Spokane, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.

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

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