In a Three Sisters garden, corn, beans and squash plants are grown together in a mutually beneficial arrangement. Tall corn is grown in the middle. Climbing beans grow up the corn stalks. And squash spreads across the soil providing the ground cover. Be sure to select pole beans rather than bush, and trailing summer squash rather than compact varieties.
When the corn plants get several inches tall, it’s time to plant the beans and squash. Plant four bean seeds 6" from the base of each corn plant and 1" deep. Finally, plant four or five squash seeds in a circle around the perimeter of the hill surrounding the bean and corn plants.