Swiss Chard

This broad leafy green treasured by health-food enthusiasts for its antioxidant benefits can be somewhat pricey at the supermarket. But fortunately, it’s easy to grow and very adaptable, tolerant of mild frosts and 90-degree temperatures, said Kevin Erdman, certified master gardener and certified nursery professional at Berridge Nurseries in Phoenix. “Highly nutritious, and the colored forms are highly ornamental to boot,” Erdman said. Best grown in USDA growing zones 5-10.

Find out what zone you're in by checking the USDA Plant Hardiness Zone Map here.