Swiss chard is the leafy green for gardeners who want steady returns without much fuss, throwing up glossy, colorful leaves for months on end. It shrugs off both a bit of frost and a stretch of heat that would finish off spinach. The one rule: harvest outer leaves only, and the plant will keep resprouting from the center all season.
Chard tolerates the light shade cast by taller beans, making good use of vertical garden space.