Should You Allow Basil Plants to Flower? Gardener's Path The cultivation method known as The Three Sisters or Milpa is an ancestral technique used by indigenous peoples of America to optimize the growth of three basic crops: corn, beans and squash. People often ask about the Long Red Chinese Noodle Beans growing in my garden. Yes, they're edible and quite delicious, especially when sauted in a spicy garlic and ginger soy sauce. Yes, Invasive Species