Edamame does best in full-sun locations with well-drained soil that has plenty of organic matter. Raised-bed gardens make great sites. When planting edamame, allow soils to thoroughly warm up to 55-60 degrees F prior to planting. Edamame seed do not germinate in cool soils so wait to plant for best success.
Plant one inch deep, 3″ apart within rows, with rows 20 inches apart. bother benefit for growing edamame is it will help with soil fertility.
Harvest edamame when the beans in the pod are 80-90% expanded or when the leaves have changed from bright green to a slight yellowish-green color. Handpick pods with at least two beans per pod and select pods which are only bright green in color. Pods can be refrigerated for up to a week or blanch them for 2-3 minutes in boiling water and freeze them loose in zip-lock bags.
Here are some recipes for edamame that I think you will enjoy.
1 (15-ounce) can cannellini beans, drained and rinsed
1 1/2 cups shelled, cooked edamame, thawed if frozen
2 medium garlic gloves, coarsely chopped
1/4 cup water
3 tablespoons freshly squeezed lemon juice
2 tablespoons olive oil
1 teaspoon salt, plus more as needed
1/4 teaspoon toasted sesame oil
Freshly ground black pepper
2 tablespoons coarsely chopped fresh cilantro
Roasted Edamame with Sea Salt and Cracked Black Pepper
1 pound shelled edamame
2 teaspoons extra-virgin olive oil
1 teaspoon sea salt
1/2 teaspoon freshly-cracked black pepper