Purchase the Seeds

Unlike other beans, which grow on both bushes and climbing vines, all edamame beans are low-growing bush beans. Popular varieties include Black Pearl, Sayamusume and Midori Giant.

Step 1

Fertilize Soil for Edamame Plants

Prepare Soil for Planting Edamame

Prepare the Site

Edamame do best in full-sun locations with well-drained soil that has plenty of organic matter. Raised-bed gardens make great sites. The bean plants grow best in a slightly acidic soil with a pH range of about 6.0 to 6.5. Work organic matter into the garden bed to improve the soil's texture and fertilize with 05-10-10 fertilizer.

Step 2

Get Edamame Seeds Ready for Planting

Prepare Edamame Seeds with Beneficial Bacteria

Prepare the Seeds

Moisten the bean seeds with a spray of water then sprinkle soybean inoculant powder on top. The powder is a special type of beneficial bacteria that helps beans pull nitrogen out of the air and transfer it to their roots.

Step 3

Plant Edamame Seeds When Soil is Warm Enough

Plant Seeds in Proper Temperature

Plant the Seeds

Edamame won't germinate until the soil is warm enough, so wait until soil temps reach at least 60 degrees. Plant seeds 1" deep, spacing them 3" apart in rows. Cover with soil and water well. Keep the soil moist until the seeds germinate.

Step 4

Leaf Beetle Feed on Edamame Leaf

Watch for Beetles that Eat Edamame Leaf

Cultivate the Plants

After the beans sprout spread mulch around their base, being careful not to let the mulch touch the stems of the plants. Bean plants need about 1" of water per week. Pull any weeds that sprout by hand, but never work around bean plants when they're wet as this can spread disease. Pests are not a major problem with edamame, but keep an eye out for aphids and leaf beetles.

Step 5

Pick Edamame Beans When They Peak

Harvest Edamame at Their Peak

Harvest the Edamame

All the beans on a single edamame plant mature at the same time. When the beans are almost touching one another inside the pod, and the raw beans taste mild and sweet, the edamame is ready to harvest. The easiest way to harvest them is to pull the entire plant then pick off the pods.