80 to 105 days — The productive plants grow twelve to twenty six inches tall, have white flowers, set pods that are green with white hairs and predominantly contain three seeds each. The seeds are medium-sized, green with black eyes and contain 41% protein and 19% oil (GRIN). Harvest for edamame (pronounced "ed-uh-mah-may") as early as sixty five days but average is at about ninety days.
USDA accession number PI 549057A and it was collected in Japan in 1915. Each packet contains 25 to 30 seeds.
Sow seeds about one inch deep, three to four inches apart. Although you can plant in rows, they can be planted densely and allowed to form a canopy. This will help control weed growth. Soybeans are tolerant of drought and poor soil since they fix nitrogen. They will, however, benefit from fertile soil.
Soybean flowers are perfect (self-fertile) and cross pollination is almost non-existent, making saving seed easy. Allow pods to fully develop and dry on the plants.
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