Culture: Legumes have moderate fertility needs. Excessive nitrogen may induce some varieties to develop vines in moist hot weather. Tender, will not survive frost. Plant 3–4 seeds/ft in rows 24–30" apart. Pick frequently for maximum yields, but avoid disturbing foliage in wet weather to prevent spread of fungal diseases. White-seeded beans usually don’t germinate as well as dark-seeded. Minimum germination soil temperature 60°. Optimal range 60–80°. Optimal temperature 77°.