Mashua is a tuberous cousin of the garden Nasturtium. It’s been used by humans for over 8000 years and in cultivation for 1400 years in Peru and Bolivia. Leaves and flowers are mild and nice in a salad. Tubers can be harvested all Winter or left in the ground where the plant will continue to grow year after year like a perennial. Tubers are spicy raw, a nice addition grated into a salad or roasted whole with other root vegetables. Plants require some space but love to climb so you can save a lot of space by providing a trellis.