Growing Spinach in Seattle
🇺🇸 Zone 7 Planting Guide · Warm-summer Mediterranean climate
Quick Answer: Growing Spinach in Seattle
Yes, you can grow Spinach in Seattle, US! Plant during Jan, Feb, Mar, Sep, Oct for best results. Seattle is in USDA Zone 7 with a Warm-summer Mediterranean climate, offering 250 frost-free days per year. The difficulty level is medium, and Spinach takes 37-45 days to harvest. Spinach needs partial shade ok and regular watering.
Climate Match Analysis
Seattle's temperatures (2°C to 24°C) are within the tolerable range for Spinach (-5°C to 24°C), though not always in the optimal zone (5°C to 18°C). Plant during recommended months for best results.
Seattle Climate Data
Spinach Planting Calendar for Seattle
Green months show the best time to plant Spinach in Seattle
Spinach Growing Requirements
Sunlight
Partial Shade OK
2-4 hours direct sunlight
Water
Regular
Consistent moisture, 1-2 inches/week
Days to Harvest
37-45
From planting to first harvest
Difficulty
Some experience helpful
💡 Growing Tips for Spinach
Sow as soon as soil can be worked. Bolts quickly in heat -- grow in spring/fall. 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: Spinach is frost tolerant — you can plant earlier in spring.
Companion Plants for Spinach
Find out which plants grow best alongside Spinach — and which to keep apart
Grow Spinach Indoors
No garden? Learn how to grow Spinach indoors with our complete guide
How to Grow Spinach in Seattle
Seattle, US is in USDA Hardiness Zone 7 with a Warm-summer Mediterranean climate (Köppen Csb). With winter lows of 2°C and summer highs of 24°C, the growing season spans approximately 250 frost-free days. Spinach grows well with some gardening knowledge in this climate.
Spinach thrives in temperatures between 5°C and 18°C, requiring partial shade ok and regular watering. In Seattle, the best months to plant Spinach are January, February, March, September, October. Since Spinach can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 37-45 days after planting.
With 953mm of annual rainfall, Seattle provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.
Other Plants That Grow in Seattle
More plants you can grow alongside Spinach in Seattle
Keep Exploring
Frequently Asked Questions
Can I grow spinach in Seattle?
Yes! Spinach can be successfully grown in Seattle, US. Seattle is in USDA Hardiness Zone 7 with a Warm-summer Mediterranean climate. The difficulty level for growing Spinach here is rated "medium". The best months to plant are January, February, March, September, October.
When should I plant spinach in Seattle?
In Seattle, the recommended planting months for Spinach are January, February, March, September, October. Seattle has 250 frost-free days per year, with winter lows of 2°C and summer highs of 24°C. Spinach is frost tolerant, giving you more flexibility with planting dates.
How long does spinach take to grow in Seattle?
Spinach typically takes 37-45 days from planting to harvest. In Seattle's Warm-summer Mediterranean climate with 250 frost-free days, you have plenty of time to grow Spinach to maturity. Sow as soon as soil can be worked. Bolts quickly in heat -- grow in spring/fall. 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 spinach indoors in Seattle?
Spinach can potentially be grown indoors in Seattle with proper conditions. It requires partial shade ok (2-4 hours of indirect light). Indoor growing extends your season beyond the Jan, Feb, Mar, Sep, Oct outdoor planting window. Use containers with good drainage and regular watering.
What month do I plant spinach in Seattle?
Plant Spinach in Seattle during January, February, March, September, October. These are the optimal months based on Seattle's USDA Zone 7 climate, 250 frost-free days, and temperature range of 2°C to 24°C.
Is spinach hard to grow in Seattle?
Spinach is rated "medium" to grow in Seattle. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Spinach in Seattle is Good.
What grows well with spinach in Seattle?
In Seattle, you can grow many companion plants alongside Spinach. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Seattle's Zone 7 climate.
Does spinach need full sun in Seattle?
Spinach requires partial shade ok. Spinach tolerates lower light. In Seattle, a spot with filtered or indirect light for 2-4 hours works well.