Planting Soybeans (Edamame)
Soybeans (Edamame) is a warm season vegetable in the Fabaceae family. Getting the timing right is the difference between a strong stand and a disappointing one, so the windows below are given relative to your own last spring frost and first fall frost rather than a generic calendar date. Look up your local frost dates and count back or forward from there.
Sow Soybeans (Edamame) directly into the garden 1–2 weeks after your last frost, once the soil has warmed.
Spacing and Planting Depth
Give Soybeans (Edamame) room to mature. The figures below come from verified extension and seed-supplier data for typical varieties.
| Spacing in row | 4 inches |
|---|---|
| Row spacing | 24 inches |
| Plants per sq ft | 1.5 |
| Planting depth | 1 inches |
| Sun requirement | Full sun |
Days to Maturity
Soybeans (Edamame) reaches maturity in 75–95 days from sowing.
Soybeans (Edamame) is ready to harvest after about 85 days. Harvest before the first fall frost, which will end the plant's productive season.
Conditions and Care
As a warm-season vegetable, Soybeans (Edamame) needs warm soil and settled weather to thrive, and is set back or killed by frost. It is frost tender, so wait until all danger of frost has passed before planting out and harvest before the first fall frost.
Soybeans (Edamame) needs full sun — give it at least six hours of direct light a day for the best growth and flavor. Sow seed about 1 inch deep, then keep the soil evenly moist until seedlings establish.
Soybeans (Edamame) belongs to the Fabaceae family; rotating where you grow members of this family each year helps limit the build-up of soil-borne pests and disease. Soybeans (Edamame) is generally grown as a single planting each season rather than succession sown.
Companion Plants
Pairing Soybeans (Edamame) with the right neighbors can improve growth and deter pests; a few combinations are best avoided.