Tohya soybean seeds are our earliest maturing edamame option. They produce plump, slightly furry pods on stocky bush plants that grow to only 60cm (24″) tall. The pods average three seeds each, maturing in a concentrated set for easy harvest. Tohya has great flavour and appealing texture for delicious homemade edamame. This variety still matures later in the season, requiring ample heat units, but it is a bit earlier to mature than Sayamusume and Kuroshinju. Try some soybeans in your raised beds or in large patio containers. They are slow growing but very easy to grow and harvest.
Matures in 78 days. (Open-pollinated seeds)
How to Grow Soya Beans
The immature seeds of the edible soya bean are a nutritious snack. Steam or boil the whole pods for 3-5 minutes and set out, salted or unsalted, as a fun finger-food. This treat is called edamame. The small, slightly fuzzy pods hold fat green beans that pop out easily from the cooked soybean pods. They have a smooth rich taste that kids love. Good for freezing also. The plants are big and vigorous but the seeds are delicate, so don’t drop or crush them. Soya beans contain the most protein out of all the beans, and are a healthy addition to your diet. Follow along with this handy How to Grow Soya Beans Guide and grow food! Warning: Some people are allergic to soybeans.
We Recommend: Sayamusume (BN158) has been around for years, and is a tried and tested variety for both coastal and warmer climates. Kuroshinju and Tohya are also excellent choices.
Season & Zone
Season: Warm season
Direct sow from late May to mid-June, once the soil has warmed up. Cold, damp soil can result in poor germination or rotted seeds. Optimal soil temperature: 21-32°C (70-90°F).
Do not pre-soak soya bean seeds. Using inoculant on seeds helps growth. Sow seeds 2-5cm (1-2″) deep, 5-10cm (2-4″) apart, in rows 60cm (24″) apart. If the weather is too wet, seeds can be started indoors in pots and carefully transplanted a few weeks later. Germination takes 8-16 days, depending on conditions.
Ideal pH: 5.8-6.2. Well drained, warm soil is best. Use 1 cup of complete organic fertilizer for every wm (10′) of row. Too much nitrogen fertilizer is often the cause of poor pod set and delayed maturity. If beans flower but do not set pods, the cause can be zinc deficiency. Try spraying the plants with kelp based fertilizer. Wet leaves on crowded plants are subject to diseases. Thin plants to increase air circulation and avoid touching the leaves while they are wet.
Pick pods that are in the middle of the plant as soon as they start to fatten up. By mid-September, you can pull up the whole plant and pick the remaining pods at your leisure. Edamame is the word used to describe the whole pods, which have been steamed or boiled, and optionally salted. The beans popped out of them for a delicious treat! The green vegetable soybeans freeze well after blanching.
In optimal conditions at least 75% of seeds will germinate. Usual seed life: 3 years. Per 100′ row: 800 seeds, per acre: 174M seeds.
Good for fixing nitrogen, and acting as a mulch against weeds. Grow soya beans with corn. Soya beans repel Japanese beetles and chinch bugs.
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