Description
Botanical name
Glycine max
Family
Papilionaceae
Spacing
8 per square foot in 2 rows of 4. Does better with some support. Could even be a wire wicket bent at 30 cm (12″).
Depth
Lay seeds on their side and cover with 2 cm (1″) of soil. Firm the soil with your fingers.
Requirements
Hot and sunny. Loamy soil, pH around 6-6.5.
Germination
Seeds will sprout in 6-16 days.
Pests
Aphids and spider mites. Both can be washed off with a hard jet of water.
Timing
Direct sow starting in mid-May. Warm-weather crop. Best soil temperature is at least 21°C (70°F). Since all the pods on a plant are ready to pick at once, make successive sowings — every week or two — to ensure fresh edamame all summer long.
Growing
Apart from daily watering, your only care consists of spraying leaves with kelp fertilizer periodically to boost nutrient uptake.
Days to maturity
75
Season
Warm, annual