This spicy green will be ready to eat in a month or so. Marty Baldwin If you love the peppery flavor of arugula when it gives a kick to salads, substitutes for lettuce on sandwiches, serves as a topping on pizza, or adds zing to a pasta dish, consider growing your own. Arugula (Eruca sativa) is a fast-growing annual that is typically ready for harvest in 30–50 days, so you can enjoy what you...