Skip to content
🥬 Vegetable medium

Growing Edamame in Seattle

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

USDA Zone 7 250 frost-free days 80-100 days to harvest

Quick Answer: Growing Edamame in Seattle

Yes, you can grow Edamame in Seattle, US! Plant during Mar, Apr, May, Jun 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 Edamame takes 80-100 days to harvest. Edamame needs full sun and regular watering.

Climate Match Analysis

Moderate Match Seattle + Edamame

Seattle's climate requires careful timing. Winter lows (2°C) drop below Edamame's minimum (10°C), so avoid cold months. Follow the recommended planting months for success.

Edamame tolerates 10°C to 35°C
Optimal: 20°C - 30°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

Edamame Planting Calendar for Seattle

Green months show the best time to plant Edamame in Seattle

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

Edamame Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

80-100

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Edamame

Harvest when pods are plump but still green. Bush varieties don't need staking. Wait until soil warms to at least 20°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Edamame is NOT frost tolerant — wait until after the last frost in Seattle.

How to Grow Edamame 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. Edamame grows well with some gardening knowledge in this climate.

Edamame thrives in temperatures between 20°C and 30°C, requiring full sun and regular watering. In Seattle, the best months to plant Edamame are March, April, May, June. Edamame is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 80-100 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 Edamame in Seattle

Keep Exploring

Frequently Asked Questions

Can I grow edamame in Seattle?

Yes! Edamame 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 Edamame here is rated "medium". The best months to plant are March, April, May, June.

When should I plant edamame in Seattle?

In Seattle, the recommended planting months for Edamame are March, April, May, June. Seattle has 250 frost-free days per year, with winter lows of 2°C and summer highs of 24°C. Since Edamame is not frost tolerant, make sure to plant after the last frost date.

How long does edamame take to grow in Seattle?

Edamame typically takes 80-100 days from planting to harvest. In Seattle's Warm-summer Mediterranean climate with 250 frost-free days, you have plenty of time to grow Edamame to maturity. Harvest when pods are plump but still green. Bush varieties don't need staking. Wait until soil warms to at least 20°C before transplanting outdoors — cold soil stunts growth and can invite root rot. 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 edamame indoors in Seattle?

Edamame 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 Mar, Apr, May, Jun outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant edamame in Seattle?

Plant Edamame in Seattle during March, April, May, June. 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 edamame hard to grow in Seattle?

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

What grows well with edamame in Seattle?

In Seattle, you can grow many companion plants alongside Edamame. 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 edamame need full sun in Seattle?

Edamame 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

See an error? Report it