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Growing Sweet Pea Flower in Seattle

🇺🇸 Zone 7 Planting Guide · Warm-summer Mediterranean climate

USDA Zone 7 250 frost-free days 55-70 days to harvest

Quick Answer: Growing Sweet Pea Flower in Seattle

Yes, you can grow Sweet Pea Flower 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 Sweet Pea Flower takes 55-70 days to harvest. Sweet Pea Flower needs full sun and regular watering.

Climate Match Analysis

Good Match Seattle + Sweet Pea Flower

Seattle's temperatures (2°C to 24°C) are within the tolerable range for Sweet Pea Flower (-2°C to 24°C), though not always in the optimal zone (10°C to 20°C). Plant during recommended months for best results.

Sweet Pea Flower tolerates -2°C to 24°C
Optimal: 10°C - 20°C
Seattle range 2°C to 24°C

Seattle Climate Data

USDA Zone
7
Frost-Free
250days
Winter Low
2°C
Summer High
24°C
Rainfall
953mm/yr
Climate
Csb
Warm-summer Mediterranean

Sweet Pea Flower Planting Calendar for Seattle

Green months show the best time to plant Sweet Pea Flower in Seattle

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Sweet Pea Flower Not recommended

Sweet Pea Flower Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

55-70

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Sweet Pea Flower

Soak seeds overnight. Plant early -- they love cool weather. 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: Sweet Pea Flower is frost tolerant — you can plant earlier in spring.

How to Grow Sweet Pea Flower 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. Sweet Pea Flower grows well with some gardening knowledge in this climate.

Sweet Pea Flower thrives in temperatures between 10°C and 20°C, requiring full sun and regular watering. In Seattle, the best months to plant Sweet Pea Flower are January, February, March, September, October. Since Sweet Pea Flower can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 55-70 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 Sweet Pea Flower in Seattle

Keep Exploring

Frequently Asked Questions

Can I grow sweet pea flower in Seattle?

Yes! Sweet Pea Flower 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 Sweet Pea Flower here is rated "medium". The best months to plant are January, February, March, September, October.

When should I plant sweet pea flower in Seattle?

In Seattle, the recommended planting months for Sweet Pea Flower 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. Sweet Pea Flower is frost tolerant, giving you more flexibility with planting dates.

How long does sweet pea flower take to grow in Seattle?

Sweet Pea Flower typically takes 55-70 days from planting to harvest. In Seattle's Warm-summer Mediterranean climate with 250 frost-free days, you have plenty of time to grow Sweet Pea Flower to maturity. Soak seeds overnight. Plant early -- they love cool weather. 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 sweet pea flower indoors in Seattle?

Sweet Pea Flower can potentially be grown indoors in Seattle 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 Jan, Feb, Mar, Sep, Oct outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant sweet pea flower in Seattle?

Plant Sweet Pea Flower 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 sweet pea flower hard to grow in Seattle?

Sweet Pea Flower is rated "medium" to grow in Seattle. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Sweet Pea Flower in Seattle is Good.

What grows well with sweet pea flower in Seattle?

In Seattle, you can grow many companion plants alongside Sweet Pea Flower. 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 sweet pea flower need full sun in Seattle?

Sweet Pea Flower requires full sun. In Seattle, 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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