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Growing Catnip in Spokane

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

USDA Zone 3 155 frost-free days 60-80 days to harvest

Quick Answer: Growing Catnip in Spokane

Yes, you can grow Catnip 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 easy, and Catnip takes 60-80 days to harvest. Catnip needs full sun to partial shade and moderate watering.

Climate Match Analysis

Good Match Spokane + Catnip

Spokane's temperatures (-8°C to 30°C) are within the tolerable range for Catnip (-15°C to 30°C), though not always in the optimal zone (12°C to 24°C). Plant during recommended months for best results.

Catnip tolerates -15°C to 30°C
Optimal: 12°C - 24°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

Catnip Planting Calendar for Spokane

Green months show the best time to plant Catnip in Spokane

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

Catnip Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

💧

Water

Moderate

Keep soil consistently moist

📅

Days to Harvest

60-80

From planting to first harvest

📊

Difficulty

easy

Great for beginners

💡 Growing Tips for Catnip

Very vigorous -- contain or it spreads. Cats will roll in it. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.

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

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

Catnip thrives in temperatures between 12°C and 24°C, requiring full sun to partial shade and moderate watering. In Spokane, the best months to plant Catnip are March, April, May, July, August. Since Catnip can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 60-80 days after planting.

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

Other Plants That Grow in Spokane

More plants you can grow alongside Catnip in Spokane

Keep Exploring

Frequently Asked Questions

Can I grow catnip in Spokane?

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

When should I plant catnip in Spokane?

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

How long does catnip take to grow in Spokane?

Catnip typically takes 60-80 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 Catnip to maturity. Very vigorous -- contain or it spreads. Cats will roll in it. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.

Can I grow catnip indoors in Spokane?

Catnip can potentially be grown indoors in Spokane 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 moderate watering.

What month do I plant catnip in Spokane?

Plant Catnip 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 catnip hard to grow in Spokane?

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

What grows well with catnip in Spokane?

In Spokane, you can grow many companion plants alongside Catnip. 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 catnip need full sun in Spokane?

Catnip requires full sun to partial shade. Catnip tolerates lower light. In Spokane, 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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