Runner Bean Scarlet Emperor Butter Bean Vegetable Plant Seeds - 30 Organic Seeds An old favourite, clusters of red flowers. Early into production with heavy crops of long beans, 38cm (15). Scarlet runner beans should be planted in soil that is high in organic matter & in full sun. They grow quickly & require support. Once planted, scarlet runner bean care is easy. Sow May - July directly in soil. Space 2-3 apart. Runner Bean Scarlet Emperor Butter Vegetable Plant Seeds - 30 Organic