In some Native American cultures, the color blue represents the sky, water, and the spirit world. It can also symbolize peace, serenity, and spiritual awareness. Blue is often used in ceremonies related to prayer, meditation, and vision quests. In Native American mythology, the number three represents the vertical picture of the world. It represents the space between the Heavens and the Earth.
The Iroquois tribe also expressed the significance of the number three by smoking from a pipe three times. Traditional Native American gardeners have planted the Three Sisters (corn, beans, and squash) in many different regions of North America. Some versions of the Three Sisters legends involve the crops personified as three women who separate from each other only to find out that they are stronger together.