Growing Lettuce in Seattle
🇺🇸 Zone 7 Planting Guide · Warm-summer Mediterranean climate
Quick Answer: Growing Lettuce in Seattle
Yes, you can grow Lettuce 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 easy, and Lettuce takes 30-60 days to harvest. Lettuce needs partial shade ok and regular watering.
Climate Match Analysis
Seattle's temperatures (2°C to 24°C) are within the tolerable range for Lettuce (2°C to 24°C), though not always in the optimal zone (10°C to 20°C). Plant during recommended months for best results.
Seattle Climate Data
Lettuce Planting Calendar for Seattle
Green months show the best time to plant Lettuce in Seattle
Lettuce Growing Requirements
Sunlight
Partial Shade OK
2-4 hours direct sunlight
Water
Regular
Consistent moisture, 1-2 inches/week
Days to Harvest
30-60
From planting to first harvest
Difficulty
Great for beginners
💡 Growing Tips for Lettuce
Sow successively every 2 weeks. Provide afternoon shade in warmer climates. 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: Lettuce is frost tolerant — you can plant earlier in spring.
Companion Plants for Lettuce
Find out which plants grow best alongside Lettuce — and which to keep apart
Grow Lettuce Indoors
No garden? Learn how to grow Lettuce indoors with our complete guide
How to Grow Lettuce 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. Lettuce is one of the easiest plants to grow in this climate.
Lettuce thrives in temperatures between 10°C and 20°C, requiring partial shade ok and regular watering. In Seattle, the best months to plant Lettuce are January, February, March, September, October. Since Lettuce can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 30-60 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 Lettuce in Seattle
Keep Exploring
Frequently Asked Questions
Can I grow lettuce in Seattle?
Yes! Lettuce 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 Lettuce here is rated "easy". The best months to plant are January, February, March, September, October.
When should I plant lettuce in Seattle?
In Seattle, the recommended planting months for Lettuce 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. Lettuce is frost tolerant, giving you more flexibility with planting dates.
How long does lettuce take to grow in Seattle?
Lettuce typically takes 30-60 days from planting to harvest. In Seattle's Warm-summer Mediterranean climate with 250 frost-free days, you have plenty of time to grow Lettuce to maturity. Sow successively every 2 weeks. Provide afternoon shade in warmer climates. 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 lettuce indoors in Seattle?
Lettuce 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 lettuce in Seattle?
Plant Lettuce 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 lettuce hard to grow in Seattle?
Lettuce is rated "easy" to grow in Seattle. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Lettuce in Seattle is Good.
What grows well with lettuce in Seattle?
In Seattle, you can grow many companion plants alongside Lettuce. Good options from the same planting window include Tomato, Basil, Carrot, Pepper and 2 more. These plants share similar planting months and thrive in Seattle's Zone 7 climate.
Does lettuce need full sun in Seattle?
Lettuce requires partial shade ok. Lettuce tolerates lower light. In Seattle, a spot with filtered or indirect light for 2-4 hours works well.