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Can You Grow Edamame (Soybean) in Washington?

US · USDA Zone 8b · zones 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b

Grows well here

Edamame grows well in your zone — direct sow and enjoy fresh pods all summer.

Plant zones

5a–10b

Washington last frost

late January

Washington first frost

mid-December

Days to harvest

70–95 days

When to plant Edamame (Soybean)s in Washington

Direct sow

Jan 30

Harvest

Apr 10 – May 5

Dates are approximate, based on Washington's average frost dates. Your exact yard may vary by microclimate.

About Edamame (Soybean)

Edamame is fresh soybean harvested in the green immature stage — the source of those restaurant appetizer pods. Protein-rich and easy to grow with a satisfying harvest. Also used in Indian cooking as a nutritious vegetable.

Direct sow after soil warms to 60°F — edamame does not transplant well. Sow 2 inches deep, 4 inches apart. Inoculate seeds with soybean inoculant for best yields. Harvest when pods are plump and bright green but before they turn yellow. Blanch and freeze excess.

Full edamame (soybean) growing guide →

Gardening in Washington

Washington has dramatically different climates. The wet maritime west (Zone 8a-8b) is mild and productive year-round. Eastern Washington is semi-arid and colder (Zone 5-6) with hot dry summers.