Planting Instructions:
Soybeans are a tender plant and should be sown after all danger of frost has passed and the soil has warmed. Planting them at about the same time as corn is a good rule.
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.
Note: If you are unfamiliar with natto, it is a traditional, and very ancient, Japanese food made by fermenting soybeans with Bacillus subtilis or Bacillus natto.
It is a popular breakfast food in some regions of Japan but can be an
acquired taste due to its strong smell and flavor, as well as its
slippery texture.